body{margin:0!important}.content_box{height:100%;background-color:#fff;position:relative}@media screen and (min-width:1024px){.content_box{width:1024px;margin:auto}}.login_banner{width:100%;height:160px;position:relative}.login_banner img{width:100%;height:100%}.logo{width:100px;position:absolute;left:12px;top:-7px}.main_content{margin-top:-65px;background-color:#fff;padding:10px;z-index:999}