.article-div{background:#fff;padding:30px 50px;height:100vh;overflow:scroll;float:left;padding-left:calc(50% - 600px);padding-right:calc(50% - 600px)}.article-title{width:100%;text-align:left;font-size:30px;color:#333;font-weight:700;line-height:46px}.article-subtitle-div{font-size:16px}.article-source-div,.article-subtitle-div{width:100%;text-align:left;border-bottom:1px solid #efefef;line-height:38px}.article-source-div{font-size:14px;color:#999}.article-source-div span{margin-left:5px}.article-tags{padding:2px 5px;background:#efefef}.article-brief-div{margin:10px 0 10px 0}