效果截图：
实现代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title></title>
<style type="text/css">
.linear{
width:100%;
height:600px;
FILTER: progid:DXImageTransform.Microsoft.Gradient(gradientType=0,startColorStr=##15A216,endColorStr=#fafafa); /*IE*/
background:-moz-linear-gradient(top,#15A216,#fafafa);/*火狐*/
background:-webkit-gradient(linear, 0% 0%, 0% 100%,from(#15A216), to(#fafafa));/*谷歌*/
background-image: -webkit-gradient(linear,left bottom,left top,color-start(0, #15A216),color-stop(1, #fafafa));/* Safari & Chrome*/
filter: progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#15A216', endColorstr='#fafafa'); /*IE6 & IE7*/
-ms-filter: "progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr='#15A216', endColorstr='#fafafa')"; /* IE8 */
}
</style>
</head>
<body>
<div></div>
</body>
</html>