.shine{position:relative;overflow:hidden}.shine:before{content:"";position:absolute;top:-50%;left:-100%;width:60%;height:200%;background:linear-gradient(90deg,transparent,hsla(0,0%,100%,.4),transparent);transform:rotate(40deg);animation:shine 4s infinite}@keyframes shine{0%{left:-100%}30%{left:200%}to{left:200%}}