.loader{display:flex;align-items:center;justify-content:center;background-color:#212121;position:fixed;top:0;left:0;height:100vh;width:100%}.bar{display:inline-block;width:3px;height:20px;background-color:hsla(0,0%,100%,.5);border-radius:10px;animation:scale-up4 1s linear infinite}.bar:nth-child(2){height:35px;margin:0 5px;animation-delay:.25s}.bar:nth-child(3){animation-delay:.5s}@keyframes scale-up4{20%{background-color:#fff;transform:scaleY(1.5)}40%{transform:scaleY(1)}}