body:before{background-image:url(/build/images/wallpaper.b5484a32.jpg);background-position:100%;background-size:cover;content:"";height:100%;padding:50px;position:absolute;width:100%;z-index:-1}div.container-form{background:rgba(0,0,0,.5);box-shadow:0 0 22px #ccc;transition:box-shadow .3s,background .3s}div.container-form:hover{background:rgba(0,0,0,.6);box-shadow:0 0 30px #ccc}