css on click
<!DOCTYPE html>
<html>
<head>
<style>
/* On click: */
a:active {
background-color: yellow;
}
button:focus {
background-color: yellow;
}
/* On hover: */
h1:hover {
background-color: red;
}
p:hover {
background-color: red;
}
</style>
</head>
<body>
<a href="#">Click Me</a>
<button>Click me</button>
<h1>Hover over me</h1>
<p>Hover over me</p>
</body>
</html>