.loader{aspect-ratio:4;background:radial-gradient(circle closest-side,#000 90%,#0000) 0/calc(100%/3) 100% space;clip-path:inset(0 100% 0 0);animation:l1 2s steps(4) infinite}@keyframes l1{to{clip-path:inset(0 -34% 0 0)}}