.ef-crt{background:linear-gradient(to top,#3330,#3330,#333,#333,#3330,#3330);background-size:cover;background-size:100% 3px;animation:scanlines infinite 30s linear;opacity:.15}@keyframes scanlines{0%{background-position:0 0}to{background-position:0 -12px}}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:20;pointer-events:none}