.article-list .main-wrap{margin-top:24px}.article-list .main-wrap .article-wrap{float:right;width:100%;border:1px solid #f2f2f2;border-radius:4px;min-height:400px}.ad-banner{position:relative}.ad-banner .ad-href{position:absolute;left:0;top:0;height:100%;width:100%;cursor:pointer;display:block;z-index:300}.ad-banner .ad-href.prevent{pointer-events:none}.ad-banner .ad-back{background-position:50%;background-repeat:no-repeat;background-color:#fafafa;border-radius:4px;cursor:pointer}.ad-banner .ad-back.loading{background-size:auto 30px}