#header{background:#fff}.article-container{margin:10px auto;width:1200px;min-height:600px}ol,ul{list-style:none}.article-container{text-align:left}.article-container .right-content{float:left;width:980px;background:#fff;padding:20px;min-height:700px}.back-to-top{margin-top:100px;position:fixed;right:22px;width:56px;z-index:1000;bottom:10px}.back-to-top img{width:56px;height:56px}.right-section{position:fixed;right:20px;top:260px;z-index:1000}.right-section a{display:block;margin-top:20px}.right-section a img{width:60px;height:60px;cursor:pointer}