现行渐变
首先看下示例
（1）垂直渐变
（2）垂直渐变
IE系列
filter: progid:DXImageTransform.Microsoft.Gradient(startColorStr='#FF0000',endColorStr='#F9F900',gradientType='0');
参数：startColorStr起始颜色 endColorStr结束颜色 gradientType为0时代表垂直，为1时代表水平
Firefox
background: -moz-linear-gradient(top, #FF0000, #F9F900);
参数：top、bottom垂直，left、right水平 例如：top时从顶部由#FF0000到#F9F900渐变，bottom时从底部由#FF0000到#F9F900渐变
Opera
background: -o-linear-gradient(top,#FF0000, #F9F900);
参数：top、bottom垂直，left、right水平 例如：top时从顶部由#FF0000到#F9F900渐变，bottom时从底部由#FF0000到#F9F900渐变
webkit，如Chrome、Safari等
background: -webkit-gradient(linear, 0% 0%, 0% 100%, from(#FF0000), to(#F9F900));
参数：linear线性， x1 x2, x3 x4 x1与x3相同时垂直，x2与x4相同时水平 from起始颜色 to结束颜色
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>线性渐变（linear-gradient）---http://www.jb51.net</title> <style type="text/css"> .test1 { width: 200px; height: 80px; text-align: center; line-height: 80px; margin-bottom: 10px; color: White; font-size: 20px; filter: progid:DXImageTransform.Microsoft.Gradient(startColorStr='#FF0000',endColorStr='#F9F900',gradientType='0'); background: -moz-linear-gradient(top, #FF0000, #F9F900); background: -o-linear-gradient(top,#FF0000, #F9F900); background: -webkit-gradient(linear, 0% 0%, 0% 100%, from(#FF0000), to(#F9F900)); } .test2 { width: 200px; height: 80px; text-align: center; line-height: 80px; margin-bottom: 10px; color: White; font-size: 20px; filter: progid:DXImageTransform.Microsoft.Gradient(startColorStr='#FF0000',endColorStr='#F9F900',gradientType='1'); background: -moz-linear-gradient(left, #FF0000, #F9F900); background: -o-linear-gradient(left,#FF0000, #F9F900); background: -webkit-gradient(linear, 0% 0%, 100% 0%, from(#FF0000), to(#F9F900)); } </style> </head> <body> <div class="test1"> 垂直渐变 </div> <div class="test2"> 水平渐变 </div> </body> </html>