.list_main_left{ width:780px; float:left; margin-right:20px; }
.content{ margin:20px 0; }
.content h2{ height:50px; line-height:50px; color:#000; font-size:24px; font-weight:bold; text-align:center}

.info{ text-align:center; color:#757575; line-height:50px; height:50px; border-bottom:1px dashed #dadada }
.info small{ margin-left: 20px;}
.content_body{    color: rgb(85, 85, 85); line-height:26px;letter-spacing: 1px;}
.ul_prenext{ margin-top:20px;}
.ul_prenext li{ height:40px; line-height:40px;}