.loader{width:48px;height:48px;border-radius:50%;display:inline-block;border-top:4px solid #000;border-right:4px solid transparent;box-sizing:border-box;animation:rotation 1s linear infinite}.loader:after{content:"";box-sizing:border-box;position:absolute;left:0;top:0;width:48px;height:48px;border-radius:50%;border-left:4px solid #FF3D00;border-bottom:4px solid transparent;animation:rotation .5s linear infinite reverse}@keyframes rotation{0%{transform:rotate(0)}to{transform:rotate(360deg)}}