使用CSS绘制3个硬币图像

<div class="coin"></div>

.coin {
  width: 100px;
  height: 100px;
  position: relative;
  border-radius: 50%;
  background-color: #c0c0c0;
}

.coin:before {
  content: "";
  position: absolute;
  top: 10px;
  left: 10px;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: #f0f0f0;
}

.coin:after {
  content: "";
  position: absolute;
  top: 25px;
  left: 25px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: #c0c0c0;
}