@keyframes wave{0%{left:-150%}50%{left:50%}to{left:150%}}.skeleton-wave{position:relative;overflow:hidden}.skeleton-wave:before{content:"";position:absolute;top:0;left:-150%;height:100%;width:100%;background:linear-gradient(90deg,transparent,hsla(0,0%,100%,.8),transparent);animation:wave 2s linear infinite}