style.css

:root{
    --main-color: #0a0a0a;
    --color-dark: #1D2231;
    --text-grey: #8390A2;
}
*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    list-style-type: none;
    text-decoration: none;
    font-family: sans-serif;
}
.sidebar{
    width: 345px;
    position: fixed;
    left: 0;
    top: 0;
    height: 100%;
    background: var(--main-color);
    z-index: 100;
}
.sidebar-brand{
    height: 90px;
    padding: 1rem 0rem 1rem 2rem;
    color: #fff;
}
.sidebar-brand span{
    display: inline-block;
    padding-right: 1rem;
}
.sidebar-menu {
    margin-top: 5rem;
}
.sidebar-menu li{
    width: 100%;
    margin-bottom: 1.7rem;
    padding-left: 1rem;
}
.sidebar-menu a {
    padding-left: 1rem;
    display: block;
    color: #fff;
    font-size: 1.2rem;
}
.sidebar-menu a.active{
    background: #fff;
    padding-top: 1rem;
    padding-bottom: 1rem;
    color: var(--main-color);
    border-radius: 30px 0px 0px 30px;
}
.sidebar-menu a span:first-child{
    font-size: 1.5rem;
    padding-right: 1rem;

}
.pwd-btn button{
    margin-top: 320px;
    border-radius: 200px;
    width: 100%;
    height: 50px;
    display: inline-block;
    align-items: center;
    overflow-x: hidden;
    font-size: 16px;
    background-color: gray;
    transition-duration: 0.4s;
    cursor: pointer;
}
.pwd-btn button:hover{
    background-color: white;
    color: black;
}
.pwd-btn-2 button{
    margin-top: 300px;
    border-radius: 200px;
    width: 100%;
    height: 50px;
    display: inline-block;
    align-items: center;
    overflow-x: hidden;
    font-size: 16px;
    background-color: gray;
    transition-duration: 0.4s;
    cursor: pointer;
}
.pwd-btn-2 button:hover{
    background-color: white;
    color: black;
}
.main-content{
    margin-left: 345px;
}
header {
    display: flex;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
    position: fixed;
    left: 345px;
    width: calc(100% - 345px);
    top: 0;
    z-index: 100;
}
.logo img{
   width: 150px;
   background-color: white;
}
header label span{
    font-size: 1.7rem;
    padding-right: 1rem;
}
.admin-wrapper{
    display: flex;
    align-items: center;
}
.admin-wrapper img {
    border-radius: 100%;
    margin-right: 5rem;
}
.admin-wrapper h4{
    font-size: 40px;
}
.btn1{
    border-radius: 200px;
    width: 100px;
    height: 50px;
    display: inline-block;
    font-size: 16px;
    background-color: gray;
    transition-duration: 0.4s;
    cursor: pointer;
}
.btn1:hover{
    background-color: white;
    color: black;
}

.search-wrapper {
    border: 1px solid #ccc;
    border-radius: 30px;
    width:50%;
    height:50px;
    display: flex;
    align-items: center;
    overflow-x: hidden;

}
.search-wrapper span {
    display: inline-block;
    padding: 0rem 1rem;
    font-size: 1.6rem;
}
.search-wrapper input {
    height: 100%;
    padding: .5rem;
    border: none;
    outline: none;

}
.btn2{
    border-radius: 200px;
    width: 100px;
    height: 50px;
    display: inline-block;
    font-size: 16px;
    background-color: black;
    color:white;
    transition-duration: 0.4s;
    cursor: pointer;
}
.btn2:hover{
    background-color: white;
    color: black;
}
main{
    margin-top: 80px;
    background: #fff;
    /* min-height: calc(100vh - 90px); */
    display: flex;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
    position: fixed;
    left: 345px;
    width: calc(100% - 345px);
    top: 0;
    z-index: 100;
}

.table{
    margin-top: 10%;
    margin-left: 25%;  
}
th, td {
    padding: 15px;
    text-align: left;
  }
.table-2{
    margin-top: 10%;
     
}
.table-2 th td{
    padding: 15px;
    text-align: left;
}
.payment{
    margin-top: 40%;
    display: flex;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
    position: fixed;
    left: 345px;
    width: calc(100% - 345px);
    top: 0;
    z-index: 100;
    background-color: black;
}
.payment-note h2{
color: #fff;
}
.payment-2{
    margin-top: 43.5%;
    display: flex;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
    position: fixed;
    left: 345px;
    width: calc(100% - 345px);
    top: 0;
    z-index: 100;
    background-color: black;
}
.payment-note-2 h2{
color: #fff;
}