#banner_wrapper{background-image:url(/images/static/bg.png);background-size:cover}#wrapper_login{position:relative}@media only screen and (max-width: 768px){#wrapper_login{height:100vh;width:100vw;overflow-x:hidden;overflow-y:auto;background-image:url(/images/static/bg_register.jpg);background-position:center center;background-size:cover}}