diff --git a/artificial-intelligence.html b/artificial-intelligence.html
index 1f3fc4e..dc6522d 100644
--- a/artificial-intelligence.html
+++ b/artificial-intelligence.html
@@ -183,7 +183,7 @@
 </style>
 
 
-<div class="untree_co-hero overlay" style="background-image: url('');">
+<div class="untree_co-hero overlay" style="background-image: url('images/background/bg-1.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center">
 
@@ -314,7 +314,7 @@ <h3> Generative AI </h3>
 
 <!------------Blue strip--------------------------------------------->
 
-<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/atom-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center text-center">
       <div class="col-lg-7">
@@ -464,16 +464,16 @@ <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
       <div class="row">
         <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
           <div class="custom-media">
-            <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
+            <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
             <div class="custom-media-body">
               <div class="d-flex justify-content-between pb-3">
                 <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
                 <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
               </div>
-              <h3>Education Program Title</h3>
+              <h3>Computational Neuroscience</h3>
               <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
               <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-                <div><span class="price">$87.00</span></div>
+                <div><span class="price">$00.00</span></div>
                 <div><a href="#">Learn More</a></div>
               </div>
             </div>
@@ -481,16 +481,16 @@ <h3>Education Program Title</h3>
         </div>
         <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
           <div class="custom-media">
-            <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
+            <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
             <div class="custom-media-body">
               <div class="d-flex justify-content-between pb-3">
                 <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
                 <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
               </div>
-              <h3>Education Program Title</h3>
+              <h3>Quantum Computing</h3>
               <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
               <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-                <div><span class="price">$93.00</span></div>
+                <div><span class="price">$00.00</span></div>
                 <div><a href="#">Learn More</a></div>
               </div>
             </div>
@@ -498,16 +498,16 @@ <h3>Education Program Title</h3>
         </div>
         <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
           <div class="custom-media">
-            <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
+            <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
             <div class="custom-media-body">
               <div class="d-flex justify-content-between pb-3">
                 <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
                 <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
               </div>
-              <h3>Education Program Title</h3>
+              <h3>Quantum Biology</h3>
               <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
               <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-                <div><span class="price">$65.00</span></div>
+                <div><span class="price">$00.00</span></div>
                 <div><a href="#">Learn More</a></div>
               </div>
             </div>
diff --git a/brain-computer-interface.html b/brain-computer-interface.html
index b87f937..f2ec12c 100644
--- a/brain-computer-interface.html
+++ b/brain-computer-interface.html
@@ -180,7 +180,7 @@
 </style>
 
 
-<div class="untree_co-hero overlay" style="background-image: url('');">
+<div class="untree_co-hero overlay" style="background-image: url('images/background/bg-1.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center">
 
@@ -310,7 +310,7 @@ <h3>Course 6 Learning Portals</h3>
 
   <!------------Blue strip--------------------------------------------->
 
-  <div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+  <div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/atom-bg.jpg');">
     <div class="container">
       <div class="row align-items-center justify-content-center text-center">
         <div class="col-lg-7">
@@ -457,16 +457,16 @@ <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
     <div class="row">
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Computational Neuroscience</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$87.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -474,16 +474,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Computing</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$93.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -491,16 +491,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Biology</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$65.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
diff --git a/cloud.html b/cloud.html
index b9a6f07..e3cace3 100644
--- a/cloud.html
+++ b/cloud.html
@@ -178,7 +178,7 @@
 </style>
 
 
-<div class="untree_co-hero overlay" style="background-image: url('');">
+<div class="untree_co-hero overlay" style="background-image: url('images/background/bg-1.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center">
 
@@ -294,7 +294,7 @@ <h3> kubernetes </h3>
 
 <!------------Blue strip--------------------------------------------->
 
-<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/atom-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center text-center">
       <div class="col-lg-7">
@@ -442,16 +442,16 @@ <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
     <div class="row">
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Computational Neuroscience</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$87.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -459,16 +459,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Computing</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$93.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -476,16 +476,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Biology</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$65.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
diff --git a/computing.html b/computing.html
index 7a0cd80..8bf8410 100644
--- a/computing.html
+++ b/computing.html
@@ -178,7 +178,7 @@
 </style>
 
 
-<div class="untree_co-hero overlay" style="background-image: url('');">
+<div class="untree_co-hero overlay" style="background-image: url('images/background/bg-1.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center">
 
@@ -374,7 +374,7 @@ <h3>Distributed Computing </h3>
 
 <!------------Blue strip--------------------------------------------->
 
-<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/atom-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center text-center">
       <div class="col-lg-7">
@@ -506,7 +506,6 @@ <h3>Course 8</h3>
 
 
 
-
 <!------------Right Course for you--------------------------------------------->
 
 
@@ -521,16 +520,16 @@ <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
     <div class="row">
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Computational Neuroscience</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$87.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -538,16 +537,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Computing</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$93.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -555,16 +554,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Biology</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$65.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
diff --git a/consciousness.html b/consciousness.html
index 4f04409..22c4b0a 100644
--- a/consciousness.html
+++ b/consciousness.html
@@ -178,7 +178,7 @@
 </style>
 
 
-<div class="untree_co-hero overlay" style="background-image: url('');">
+<div class="untree_co-hero overlay" style="background-image: url('images/background/om-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center">
 
@@ -320,7 +320,7 @@ <h3> Light codes, Virtual Reality and Illusion </h3>
 
 <!------------Blue strip--------------------------------------------->
 
-<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/chakra-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center text-center">
       <div class="col-lg-7">
@@ -469,16 +469,16 @@ <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
     <div class="row">
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Computational Neuroscience</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$87.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -486,16 +486,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Computing</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$93.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -503,16 +503,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Biology</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$65.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -525,8 +525,6 @@ <h3>Education Program Title</h3>
 
 
 
-
-
 <!------------Footer--------------------------------------------->
 
 <div class="site-footer">
diff --git a/dance-and-recreation.html b/dance-and-recreation.html
index f1ad498..9fad155 100644
--- a/dance-and-recreation.html
+++ b/dance-and-recreation.html
@@ -180,7 +180,7 @@
 </style>
 
 
-<div class="untree_co-hero overlay" style="background-image: url('');">
+<div class="untree_co-hero overlay" style="background-image: url('images/background/bg-3.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center">
 
@@ -312,7 +312,7 @@ <h3>Course 6 Learning Portals</h3>
 
 <!------------Blue strip--------------------------------------------->
 
-<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/bg-4.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center text-center">
       <div class="col-lg-7">
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     <div class="row">
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
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               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Computational Neuroscience</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$87.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -479,16 +479,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Computing</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$93.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -496,16 +496,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Biology</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$65.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
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@@ -516,9 +516,6 @@ <h3>Education Program Title</h3>
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-
-
 <!------------Footer--------------------------------------------->
 
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similarity index 100%
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diff --git a/index.html b/index.html
index 5ade6ad..c91ad50 100644
--- a/index.html
+++ b/index.html
@@ -192,7 +192,7 @@
   </style>
 
 
-  <div class="untree_co-hero overlay" style="background-image: url('');">
+  <div class="untree_co-hero overlay" style="background-image: url('images/background/bg-1.jpg');">
     <div class="container">
       <div class="row align-items-center justify-content-center">
 
@@ -390,7 +390,7 @@ <h3> Consciousness and Metaphysics </h3>
 
 <!------------Blue strip--------------------------------------------->
 
-<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/atom-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center text-center">
       <div class="col-lg-7">
@@ -597,70 +597,69 @@ <h3>Consciousness and Metaphysics</h3>
 <!------------Right Course for you--------------------------------------------->
 
 
-  <div class="untree_co-section bg-light">
-    <div class="container"> 
-      <div class="row justify-content-center mb-5">
-        <div class="col-lg-7 text-center" data-aos="fade-up" data-aos-delay="0">
-          <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
-          <p>Far far away, behind the word mountains, far from the countries Vokalia and Consonantia, there live the blind texts.</p>
-        </div>
+<div class="untree_co-section bg-light">
+  <div class="container"> 
+    <div class="row justify-content-center mb-5">
+      <div class="col-lg-7 text-center" data-aos="fade-up" data-aos-delay="0">
+        <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
+        <p>Far far away, behind the word mountains, far from the countries Vokalia and Consonantia, there live the blind texts.</p>
       </div>
-      <div class="row">
-        <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
-          <div class="custom-media">
-            <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
-            <div class="custom-media-body">
-              <div class="d-flex justify-content-between pb-3">
-                <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
-                <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
-              </div>
-              <h3>Education Program Title</h3>
-              <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
-              <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-                <div><span class="price">$87.00</span></div>
-                <div><a href="#">Learn More</a></div>
-              </div>
+    </div>
+    <div class="row">
+      <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
+        <div class="custom-media">
+          <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
+          <div class="custom-media-body">
+            <div class="d-flex justify-content-between pb-3">
+              <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
+              <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
+            </div>
+            <h3>Computational Neuroscience</h3>
+            <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
+            <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
+              <div><span class="price">$00.00</span></div>
+              <div><a href="#">Learn More</a></div>
             </div>
           </div>
         </div>
-        <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
-          <div class="custom-media">
-            <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
-            <div class="custom-media-body">
-              <div class="d-flex justify-content-between pb-3">
-                <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
-                <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
-              </div>
-              <h3>Education Program Title</h3>
-              <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
-              <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-                <div><span class="price">$93.00</span></div>
-                <div><a href="#">Learn More</a></div>
-              </div>
+      </div>
+      <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
+        <div class="custom-media">
+          <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
+          <div class="custom-media-body">
+            <div class="d-flex justify-content-between pb-3">
+              <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
+              <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
+            </div>
+            <h3>Quantum Computing</h3>
+            <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
+            <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
+              <div><span class="price">$00.00</span></div>
+              <div><a href="#">Learn More</a></div>
             </div>
           </div>
         </div>
-        <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
-          <div class="custom-media">
-            <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
-            <div class="custom-media-body">
-              <div class="d-flex justify-content-between pb-3">
-                <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
-                <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
-              </div>
-              <h3>Education Program Title</h3>
-              <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
-              <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-                <div><span class="price">$65.00</span></div>
-                <div><a href="#">Learn More</a></div>
-              </div>
+      </div>
+      <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
+        <div class="custom-media">
+          <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
+          <div class="custom-media-body">
+            <div class="d-flex justify-content-between pb-3">
+              <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
+              <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
+            </div>
+            <h3>Quantum Biology</h3>
+            <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
+            <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
+              <div><span class="price">$00.00</span></div>
+              <div><a href="#">Learn More</a></div>
             </div>
           </div>
         </div>
       </div>
     </div>
   </div>
-
+</div>
 
 
 <!------------Footer--------------------------------------------->
diff --git a/math.html b/math.html
index 6a5fab7..da76afd 100644
--- a/math.html
+++ b/math.html
@@ -180,7 +180,7 @@
 </style>
 
 
-<div class="untree_co-hero overlay" style="background-image: url('');">
+<div class="untree_co-hero overlay" style="background-image: url('images/background/math-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center">
 
@@ -310,7 +310,7 @@ <h3>Course 6 Learning Portals</h3>
 
 <!------------Blue strip--------------------------------------------->
 
-<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/bg-3.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center text-center">
       <div class="col-lg-7">
@@ -461,16 +461,16 @@ <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
     <div class="row">
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Computational Neuroscience</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$87.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -478,16 +478,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Computing</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$93.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -495,16 +495,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Biology</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$65.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -517,8 +517,6 @@ <h3>Education Program Title</h3>
 
 
 
-
-
 <!------------Footer--------------------------------------------->
 
 <div class="site-footer">
diff --git a/music-and-sound.html b/music-and-sound.html
index adad6a1..18da3d7 100644
--- a/music-and-sound.html
+++ b/music-and-sound.html
@@ -178,7 +178,7 @@
 </style>
 
 
-<div class="untree_co-hero overlay" style="background-image: url('');">
+<div class="untree_co-hero overlay" style="background-image: url('images/background/music-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center">
 
@@ -307,7 +307,7 @@ <h3>Course 6 Learning Portals</h3>
 
 <!------------Blue strip--------------------------------------------->
 
-<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/bg-3.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center text-center">
       <div class="col-lg-7">
@@ -456,16 +456,16 @@ <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
     <div class="row">
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Computational Neuroscience</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$87.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -473,16 +473,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Computing</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$93.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -490,16 +490,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Biology</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$65.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -509,9 +509,6 @@ <h3>Education Program Title</h3>
   </div>
 </div>
 
-
-
-
 <!------------Footer--------------------------------------------->
 
 <div class="site-footer">
diff --git a/physics.html b/physics.html
index 81ca0f4..ea06971 100644
--- a/physics.html
+++ b/physics.html
@@ -181,7 +181,7 @@
 </style>
 
 
-<div class="untree_co-hero overlay" style="background-image: url('');">
+<div class="untree_co-hero overlay" style="background-image: url('images/background/atom-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center">
 
@@ -336,7 +336,7 @@ <h3>Fractal, Chaos and Complex System</h3>
 
 <!------------Blue strip--------------------------------------------->
 
-<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/bg-3.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center text-center">
       <div class="col-lg-7">
@@ -486,23 +486,23 @@ <h3>Fractal, Chaos and Complex System</h3>
   <div class="container"> 
     <div class="row justify-content-center mb-5">
       <div class="col-lg-7 text-center" data-aos="fade-up" data-aos-delay="0">
-        <h2 class="line-bottom text-center mb-4">The Right Course For You in Physics</h2>
+        <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
         <p>Far far away, behind the word mountains, far from the countries Vokalia and Consonantia, there live the blind texts.</p>
       </div>
     </div>
     <div class="row">
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Computational Neuroscience</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$87.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -510,16 +510,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Computing</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$93.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -527,16 +527,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Biology</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$65.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -547,9 +547,6 @@ <h3>Education Program Title</h3>
 </div>
 
 
-
-
-
 <!------------Footer--------------------------------------------->
 
 <div class="site-footer">
diff --git a/programming.html b/programming.html
index 6bdecf9..c34a594 100644
--- a/programming.html
+++ b/programming.html
@@ -181,7 +181,7 @@
 </style>
 
 
-<div class="untree_co-hero overlay" style="background-image: url('');">
+<div class="untree_co-hero overlay" style="background-image: url('images/background/bg-1.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center">
 
@@ -347,7 +347,7 @@ <h3> Docker </h3>
 
 <!------------Blue strip--------------------------------------------->
 
-<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/bg-3.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center text-center">
       <div class="col-lg-7">
@@ -494,16 +494,16 @@ <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
     <div class="row">
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Computational Neuroscience</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$87.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -511,16 +511,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Computing</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$93.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -528,16 +528,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Biology</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$65.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -548,8 +548,6 @@ <h3>Education Program Title</h3>
 </div>
 
 
-
-
 <!------------Footer--------------------------------------------->
 
 <div class="site-footer">
diff --git a/standard-models.html b/standard-models.html
index c714c0a..0db5e02 100644
--- a/standard-models.html
+++ b/standard-models.html
@@ -182,7 +182,7 @@
 </style>
 
 
-<div class="untree_co-hero overlay" style="background-image: url('');">
+<div class="untree_co-hero overlay" style="background-image: url('images/background/atom-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center">
 
@@ -311,7 +311,7 @@ <h3>Course 6 Learning Portals</h3>
 
 <!------------Blue strip--------------------------------------------->
 
-<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/chakra-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center text-center">
       <div class="col-lg-7">
@@ -459,16 +459,16 @@ <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
     <div class="row">
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Computational Neuroscience</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$87.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -476,16 +476,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Computing</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$93.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -493,16 +493,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Biology</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$65.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -514,9 +514,6 @@ <h3>Education Program Title</h3>
 
 
 
-
-
-
 <!------------Footer--------------------------------------------->
 
 <div class="site-footer">
diff --git a/web-of-life.html b/web-of-life.html
index da0bed7..8fa4a0e 100644
--- a/web-of-life.html
+++ b/web-of-life.html
@@ -181,7 +181,7 @@
 </style>
 
 
-<div class="untree_co-hero overlay" style="background-image: url('');">
+<div class="untree_co-hero overlay" style="background-image: url('images/background/biology-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center">
 
@@ -311,7 +311,7 @@ <h3>Course 6 Learning Portals</h3>
 
 <!------------Blue strip--------------------------------------------->
 
-<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/chemistry-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center text-center">
       <div class="col-lg-7">
@@ -459,16 +459,16 @@ <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
     <div class="row">
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Computational Neuroscience</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$87.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -476,16 +476,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Computing</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$93.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -493,16 +493,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Biology</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$65.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -513,9 +513,6 @@ <h3>Education Program Title</h3>
 </div>
 
 
-
-
-
 <!------------Footer--------------------------------------------->
 
 <div class="site-footer">
diff --git a/yoga-and-meditation.html b/yoga-and-meditation.html
index b4fbba4..4a33833 100644
--- a/yoga-and-meditation.html
+++ b/yoga-and-meditation.html
@@ -181,7 +181,7 @@
 </style>
 
 
-<div class="untree_co-hero overlay" style="background-image: url('');">
+<div class="untree_co-hero overlay" style="background-image: url('images/background/conscious-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center">
 
@@ -328,7 +328,7 @@ <h3>Kundalini Chakra Learning Portal</h3>
 
 <!------------Blue strip--------------------------------------------->
 
-<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('');">
+<div class="untree_co-section pt-0 bg-img overlay" style="background-image: url('images/background/chakra-bg.jpg');">
   <div class="container">
     <div class="row align-items-center justify-content-center text-center">
       <div class="col-lg-7">
@@ -478,16 +478,16 @@ <h2 class="line-bottom text-center mb-4">The Right Course For You</h2>
     <div class="row">
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class1.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/sm-neuroscience-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Computational Neuroscience</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$87.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -495,16 +495,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class2.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-computing-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Computing</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$93.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -512,16 +512,16 @@ <h3>Education Program Title</h3>
       </div>
       <div class="col-12 col-sm-6 col-md-6 col-lg-4 mb-4 mb-lg-0">
         <div class="custom-media">
-          <a href="#"><img src="images/class3.png" alt="Image" class="img-fluid"></a>
+          <a href="#"><img src="images/classes/quantum-biology-class.jpg" alt="Image" class="img-fluid"></a>
           <div class="custom-media-body">
             <div class="d-flex justify-content-between pb-3">
               <div class="text-primary"><span class="uil uil-book-open"></span> <span>43 lesson</span></div>
               <div class="review"><span class="icon-star"></span> <span>4.8</span></div>
             </div>
-            <h3>Education Program Title</h3>
+            <h3>Quantum Biology</h3>
             <p class="mb-4">Lorem ipsum dolor sit amet once is consectetur adipisicing elit optio.</p>
             <div class="border-top d-flex justify-content-between pt-3 mt-3 align-items-center">
-              <div><span class="price">$65.00</span></div>
+              <div><span class="price">$00.00</span></div>
               <div><a href="#">Learn More</a></div>
             </div>
           </div>
@@ -531,8 +531,6 @@ <h3>Education Program Title</h3>
   </div>
 </div>
 
-
-
 <!------------Footer--------------------------------------------->
 
 <div class="site-footer">