.content-section{width:1140px;margin:0 auto}
.content-section .left-aside{width:140px;float:left}
.content-section .left-aside a{font-size:20px;line-height:30px;display:block;padding-left:15px;border-left:5px solid transparent;color:#888;margin-bottom:30px}
.content-section .left-aside .current{border-left:5px solid #F6A623;color:#F6A623}
.content-section .show-case-content{float:right;width:990px}
.content-section .show-case-content a{display:block;margin:0 0 30px 30px;float:left}
.content-section .show-case-content a img{display:block;width:300px;height:200px}