.left-nav{width:220px;float:left}.left-nav .left-nav-container{background:#fff;width:210px;margin-left:0;padding:20px 10px 10px}.left-nav .left-nav-container .article-first-nav.active .article-second-nav{display:block}.left-nav .left-nav-container .article-first-nav{font-size:14px;color:#333}.left-nav .left-nav-container .article-first-nav .name{height:38px;line-height:38px;font-weight:700;cursor:pointer}.left-nav .left-nav-container .article-first-nav .article-second-nav{display:none}.left-nav .left-nav-container .article-first-nav .article-second-nav a{display:block;padding-left:20px;color:#333;height:38px;line-height:38px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.left-nav .left-nav-container .article-first-nav .article-second-nav a:hover{background:#eee;text-decoration:none}.left-nav .left-nav-container .article-first-nav .article-second-nav a.active{background:#eee;text-decoration:none}