.gradient-flashing:before{content:"";position:absolute;width:100%;height:100%;background-image:linear-gradient(120deg,hsla(0,0%,100%,0) 50%,rgba(33,218,255,.256),hsla(0,0%,100%,0) 70%);top:0;opacity:.3;animation:shine 3s var(--delay) ease-out infinite}@keyframes shine{0%{left:-100%}to{left:100%}}