html tutorial - How to animate background-color of an element on mouse hover using CSS - html5 - html code - html form
Answer: Use the CSS3 transition property
Using the CSS3 transition property it make smoothly to animate the background-color in part on mousehover, like a hyperlink.
Example
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>CSS Smooth Background Color Transition</title>
<style type="text/css">
a {
color: #fff;
border: none;
padding: 10px 20px;
display: inline-block;
text-decoration: none;
font: bold 18px sans-serif;
background: #fd7c2a;
-webkit-transition: background 2s; /* For Safari 3.0 to 6.0 */
transition: background 5s; /* For modern browsers */
}
a:hover {
background: #3cc16e;
}
</style>
</head>
<body>
<p><a href="#">Hover on me</a></p>
</body>
</html>