ul{ list-style:none;}
.main{clear:both; padding:8px; text-align:center;}

#tabs1{ text-align:left; width:700px; height: 400px; float:left;}
.menu1box{float:left; position:relative; overflow:hidden; height:411px; width:96px; text-align:left;}
#menu1{ position:absolute; top:0; left:0; z-index:1;}
#menu1 li{display:block; cursor:pointer; width:96px; height:67px; text-align:center; padding-top:5px; margin-bottom:9px; line-height:30px; font-size:18px; font-family:'微软雅黑';}
#menu1 li.hover{background:#fcfcfc; border-bottom:1px solid #a0a0a0; border-top:1px solid #a0a0a0; border-left:1px solid #a0a0a0;}
.main1box{background:#fcfcfc;float:left;margin-left:-1px; border:1px solid #a0a0a0; height:399px; width:600px; display:none;} 
#main1 ul{ display: none; }
#main1 ul.block{display: block;}