.index_banner{height:480px; width:100%;  overflow:hidden; text-align:center;background:url(../images/service_bg.gif) repeat-x bottom;}
.design dl{float:left;width:310px;height:94px;background: url(../images/design_dl_bg.gif) no-repeat;text-align:center;padding:15px 30px;filter:alpha(opacity=60);-moz-opacity:0.6;opacity:0.6;}
.design dl.sel{background: url(../images/bot1.png) no-repeat;color:#fff;filter:alpha(opacity=80);-moz-opacity:0.8;opacity:0.8;}
.design dl.sel dd{color:#fff;}
.design_center{margin:0 45px;}
.design dl dt{width:300px;font-family:"微软雅黑";font-size:20px;font-weight:bold;border-bottom:#0F6;}
.design dl dd{line-height:20px;padding-top:10px;color:#999; width:280px; text-align:center; margin:0px auto;}