.touch-ripple { position: absolute; border: 3px solid #959292;  border-radius: 50%; pointer-events: none;  transform: translate(-50%, -50%);  animation: ripple-out 0.6s linear; opacity: 0.5; } @keyframes ripple-out { from { width: 0; height: 0; opacity: 1; } to { width: 100px; height: 100px; opacity: 0; } }