body{background:url(https://i.imgur.com/5lEH4VR.jpg) center center no-repeat fixed;background-size:cover}.logo{width:18em;height:6em;background:url(/images/logo.png) no-repeat;margin:2em auto}.login-block{width:320px;padding:20px;background:#fff;border-radius:5px;margin:0 auto}