body {
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

button {
  padding: 20px 50px;
  border-radius: 10px;
  border: none;
  position: relative;
  overflow: hidden;
  background: #eee;
  cursor: pointer;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.3);
  transform: scale(0);
  animation: rippleEffect 0.6s linear;
  pointer-events: none;
}

@keyframes rippleEffect {
  to {
    transform: scale(4);
    opacity: 0;
  }
}