.guangbo{ background:url(../images/sjgzsxsm_03.jpg); width:100%; height:262px; background-position: center;}
.guangbo p{ font-size:15px; color:#FFF; margin:0 20px;}

.xdf{ background:url(../images/sjgzsxsm_05.jpg); width:100%; height:181px;background-position: center;}
.xdf p{ font-size:15px; color:#FFF; margin:0 20px;}

.daxue{ background:url(../images/sjgzsxsm_09.jpg); width:100%; height:169px;background-position: center;}
.daxue p{ font-size:15px; color:#FFF; margin:0 20px;}