.list_main{

background-color: #FFFFFF;

margin-top:10px;

min-height:350px;

_height:350px;

}

.news_type{

width:220px;

height:350px;

border:1px solid #E8E8E8;

float:left;

}

.list_box{

width:770px;

min-height:350px;

 　　　_height:350px;

border:1px solid #E8E8E8;

float:right;