.loader{box-sizing:border-box;border:5px solid #000;border-color:#000 #0000;border-radius:50%;width:48px;height:48px;margin:20px auto;animation:1s linear infinite rotation;display:inline-block}@keyframes rotation{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (prefers-color-scheme:dark){.loader{border-color:#fff #0000}}