.loader{width:120px;height:20px;-webkit-mask:linear-gradient(90deg,#333 70%,transparent 0) left/20% 100%;background:linear-gradient(#333 0 0) left -25% top 0 /20% 100% no-repeat #f0f0f0;animation:l7 1s steps(6) infinite}@keyframes l7{to{background-position:right -25% top 0}}