style.css

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  }
  
  .topnav {
  overflow: hidden;
  background-color: #71091E;
  text-align: center;
  }
  
  .topnav a {
  float: left;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
  }
  
  .topnav a:hover {
  background-color: #eb9997;
  color: black;
  }
  h3, h2, h5{
  padding-left: 12px;
}
.popup{
  position:absolute;
  top:50px;
  left:200px;
  margin:100px auto;
  width:400px;
  height:150px;
  font-family:verdana;
  font-size:13px;
  padding:10px;
  background-color:rgb(225, 224, 240);
  border:2px solid grey;
  z-index:100000000000000000;
  }
  
.cancel{
  display:relative;
  cursor:pointer;
  margin:0;
  float:right;
  height:10px;
  width:14px;
  padding:0 0 5px 0;
  background-color:red;
  text-align:center;
  font-weight:bold;
  font-size:11px;
  color:black;
  border-radius:2px;
  z-index:100000000000000000;
  }

.cancel:hover{
  background:rgb(64, 26, 167);
  }