Effect How to - Change the opacity of image on hover

Question

We would like to know how to change the opacity of image on hover.

Answer


<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
img {<!--from  www  . ja  v a  2 s.co m-->
  opacity: 0.5;
  filter: alpha(opacity = 40);
}

img:hover {
  opacity: 1.0;
  filter: alpha(opacity = 100);
}
</style>
</head>
<body>
  <img src="http://www.java2s.com/style/download.png" />
</body>
</html>

The code above is rendered as follows: