/* 独立的水波纹动画class - 只需添加到任意元素 */
.ripple {
  position: relative;
  overflow: hidden;
}

.ripple::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(255,255,255,0.8) 10%, transparent 10%) no-repeat 50%;
  transform: scale(10, 10);
  opacity: 0;
  transition: transform 0.5s, opacity 1s;
}

.ripple:active::after {
  transform: scale(0, 0);
  opacity: 0.3;
  transition: 0s;
}