.circle { position: relative; width: 120px; height: 120px; background: #333; border-radius: 50%; text-align: center; overflow: hidden; z-index: 1; } .circle::before { content: ""; display: block; position: absolute; top: 0; left: -60px; width: 120px; height: 120px; background: #999; transform-origin: right 60px; z-index: 2; animation: rotate-circle-left 2s linear forwards; } .circle::after { conte
