background: -webkit-gradient(linear, 0 0, 0 100%, from(#eee), to(#aaa)); /** Chrome Safari **/            background: -moz-linear-gradient(top, #eee, #aaa); /** FireFox **/            background: -o-linear-gradient(top, #eee, #aaa);/** Opear **/             background: -ms-linear-gradient(#eeeeee 0%,#aaaaaa 100%);/** IE9 IE10 **/             filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=‘#eeeeee‘,endColorstr=‘#aaaaaa‘,grandientType=1); /** IE7 **/             -ms-filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=‘#eeeeee‘,endColorstr=‘#aaaaaa‘,grandientType=1); /** IE8 **/ }  

css3背景渐变兼容性