按钮点击水波纹效果实现教程

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.ripple-btn {
  position: relative;
  padding: 12px 24px;
  font-size: 16px;
  color: white;
  background-color: #007bff;
  border: none;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  outline: none;
}

.ripple-btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
}

@keyframes ripple {
  0% {
    width: 0;
    height: 0;
    opacity: 0.8;
  }
  100% {
    width: 300px;
    height: 300px;
    opacity: 0;
  }
}

.ripple-btn:active::after {
  animation: ripple 0.6s ease-out;
}

@keyframes ripple {
  0% {
    width: 0;
    height: 0;
    opacity: 0.8;
  }
  100% {
    width: 400%;
    height: 400%;
    opacity: 0;
  }
}