CSS Horizontal Navigation Bar Creation Step5

<!DOCTYPE html>
<html>
<head>
 <style>
 body {margin:0;}
 li {
 float: left;
 }
 li a {
 display: block;
 color: white;
 text-align: center;
 padding: 14px 16px;
 text-decoration: none;
 }
 li a:hover:not(.active) {
 background-color: #052d73;
 }
 .active {
 background-color: #4CAF50;
 }
 ul {
 list-style-type: none;
 margin: 0;
 padding: 0;
 overflow: hidden;
 background-color: #010e24;
 position: fixed;
 top: 0;
 width: 100%;
 }
 </style>
</head>
<body>
 <ul>
 <li><a class="active" href="#home">Home</a></li>
 <li><a href="#Course">Course</a></li>
 <li><a href="#Help">Help</a></li>
 <li><a href="#about">About</a></li>
 <li><a href="#branch">Branch 1</a></li>
 </ul>
 <div style="padding:20px;margin-top:30px;background-color:#c7ebd1;height:1600px;">
 <h2>Fixed Top Navigation Bar</h2>
 <h3>This is Scrollable page kindly scroll to see the effect</h3>
 
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</div>
</body>
</html>