.video-background{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);min-width:110%;min-height:110%;background-size:cover;z-index:-2;filter:brightness(75%)blur(5px)}.dark-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,.5);z-index:-1}body,html{height:100%;margin:0;display:flex;flex-direction:column}main{flex-grow:1;margin-top:4.5rem}body{animation:fadeInAnimation ease 3s;animation-iteration-count:1;animation-fill-mode:forwards}@keyframes fadeInAnimation{0%{background-color:#000;opacity:0}100%{background-color:#000;opacity:1}}