.btn-shimmer{position:relative;overflow:hidden}.btn-shimmer:after{content:"";background:linear-gradient(120deg,#0000,#fff0 30%,#fff6 50%,#fff0 70%,#0000);width:60%;height:100%;animation:30s ease-in-out infinite shimmer;position:absolute;top:0;left:-100%}.btn-shimmer:hover:after{opacity:0;animation:none}@keyframes shimmer{0%{left:-100%}3%{left:150%}to{left:150%}}