.loader{width:45px;height:40px;background:linear-gradient(#0000 calc(1*100%/6),#fff 0 calc(3*100%/6),#0000 0),linear-gradient(#0000 calc(2*100%/6),#fff 0 calc(4*100%/6),#0000 0),linear-gradient(#0000 calc(3*100%/6),#fff 0 calc(5*100%/6),#0000 0);background-size:10px 400%;background-repeat:no-repeat;animation:matrix 1s linear infinite}@keyframes matrix{0%{background-position:0 100%,50% 100%,100% 100%}to{background-position:0 0,50% 0,100% 0}}