body{background:url("../i/section-about.jpg") no-repeat center center}body:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.15)}#login{position:relative;z-index:10}body.login div#login h1 a{background-image:url("../images/logos/logo-dark.svg");width:200px;height:60px;background-size:contain}