背景色的渐变
1）线性渐变
background:-webkit-linear-gradient(60deg,#fff 10%, #f00 30%, #0f0 50%, #00f 70%, #000);
通过色号进行背景色线性渐变
background:-webkit-linear-gradient(left top, rgba(122,156,233,.6)30%,rgb(255,12,222)60%, green80%,#fff);
通过rgb进行背景色线性渐变
background: filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#abcdef',endColorstr='#f44add',GradientType='0');
background: filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff',endColorstr='#000000',GradientType='1');
通过filter进行设置
