How to create a top navigation menu with CSS and JavaScript.

Place HTML code between the body section; preferably, immediately before the </body> code:

<div class="topnav">
  <a class="active" href="#home">Home</a>
  <a href="#news">News</a>
  <a href="#contact">Contact</a>
  <a href="#about">About</a>
</div>

Place CSS code between the head section; preferably, immediately before the </b:skin> code:

/* Add a black background color to the top navigation */
.topnav {
  background-color: #333;
  overflow: hidden;}

/* Style the links inside the navigation bar */
.topnav a {
  float: left;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;}

/* Change the color of links on hover */
.topnav a:hover {
  background-color: #ddd;
  color: black;}

/* Add a color to the active/current link */
.topnav a.active {
  background-color: #4CAF50;
  color: white;}