world/public/screen.css

.screen{position:fixed;top:0;left:0;width:100%;height:100%}.bg{z-index:0;background:#000 url(/sunset.gif) no-repeat;background-size:cover;background-position:bottom;filter:brightness(.25);box-shadow:inset 0 0 512px 128px #000}.content{z-index:1;color:#c1c4c1;padding:40px;text-align:center;width:80%;left:50%;transform:translateX(-50%)}.content .md-content{text-align:left}