#app{width:680px;margin:auto;margin-bottom:50px}header{margin:auto;color:#333;margin-bottom:10px}header h1{font-size:28px;font-weight:500;padding-top:37px;padding-bottom:22px;border-bottom:1px solid #efefef}header div{margin-top:22px}header div span{font-size:10px;display:inline-block;width:72px;height:28px;line-height:28px;text-align:center;background-color:#f5f5f5;border-radius:3px;margin-right:10px;cursor:pointer}.article{width:680px;margin:auto;text-align:center}.article img{margin:auto;max-width:100%}.article p{text-align:left;text-indent:28px}.article *{max-width:100%}.goHome{position:fixed;bottom:40px;right:10%;width:70px;height:70px;text-align:center;border:1px solid #23b7e5;border-radius:50%;display:flex;flex-direction:column;justify-content:center;align-items:center;cursor:pointer}.goHome i{color:#23b7e5}.goHome span{color:#23b7e5;font-size:12px}.goHome:hover,.goHome:active{background-color:#23b7e5}.goHome:hover i,.goHome:active i,.goHome:hover span,.goHome:active span{color:#fff}