@keyframes flip{0%{transform:rotateY(0)}25%{transform:rotateY(90deg);background:#f0c419}50%{transform:rotateY(180deg);background:#f0c419}75%{transform:rotateY(270deg);background:#f0c419}to{transform:rotateY(1turn)}}.coin{width:50px;height:50px;background:#f0c419;border:2px solid #d4a017;border-radius:50%;display:flex;justify-content:center;align-items:center;font-size:24px;font-weight:700;color:#fff;animation:flip 1s infinite}