#app{text-align:center;background-color:#ebeaea;width:100%;height:100%;position:fixed;top:0;overflow-y:auto;overflow-x:hidden}*{margin:0;padding:0;border:0}.background{position:fixed;top:0;left:0;width:100%;height:100%;background-image:url(/img/jnu.6e6d826f.png);background-repeat:no-repeat;background-position:50%;background-size:50%;background-attachment:fixed;opacity:.06;z-index:-1}