Edit This Code:
<!DOCTYPE html>
<html>
<head>
<style>
#grad1 {
    height: 200px;
    background: red; /* For browsers that do not support gradients */    
    background: -webkit-linear-gradient(left top, red, yellow); /* For Safari 5.1 to 6.0 */
    background: -o-linear-gradient(bottom right, red, yellow); /* For Opera 11.1 to 12.0 */
    background: -moz-linear-gradient(bottom right, red, yellow); /* For Firefox 3.6 to 15 */
    background: linear-gradient(to bottom right, red, yellow); /* Standard syntax (must be last) */
}

</style>
</head>
<body>

<h3>Linear Gradient - Diagonal</h3>
<p>This linear gradient starts at top left. It starts red, transitioning to yellow:</p>

<div id="grad1"></div>

<p><strong>Note:</strong> Internet Explorer 9 and earlier versions do not support gradients.</p>

</body>
</html>


Result:
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