离子波纹效果在普通的html按钮中不起作用

.button {
  position: relative;
  overflow: hidden;
  border: none;
  background-color: #ccc;
  color: #fff;
  padding: 10px 20px;
  cursor: pointer;
}

.button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 0;
  height: 0;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.2);
  opacity: 0;
  transition: width 0.3s, height 0.3s, opacity 0.3s;
}

.button:hover::before {
  width: 200px;
  height: 200px;
  opacity: 1;
}

<button class="button">按钮</button>