<!DOCTYPE html>
<html>
<head>
<style>
ul {
list-style-type: none;
margin: 0;
padding: 0;
width: 200px;
background-color: #f1f1f1;
}
li a {
display: block;
color: #000;
padding: 8px 0 8px 16px;
text-decoration: none;
}
li a.active {
background-color: #4CAF50;
color: white;
}
li a:hover:not(.active) {
background-color: #555;
color: white;
}
</style>
</head>
<body>
<h2>Vertical Navigation Bar</h2>
<p>In this example, we create an "active" class with a green background color and a white text. The class is added to the "Home" link.</p>
<ul>
<li><a class="active" href="tryit.asp-filename=trycss_navbar_vertical_active.html#home">Home</a></li>
<li><a href="tryit.asp-filename=trycss_navbar_vertical_active.html#news">News</a></li>
<li><a href="tryit.asp-filename=trycss_navbar_vertical_active.html#contact">Contact</a></li>
<li><a href="tryit.asp-filename=trycss_navbar_vertical_active.html#about">About</a></li>
</ul>
</body>
</html>