如何用html和css实现堆叠的样式效果？

<div class="container">
  <div class="box">Box 1</div>
  <div class="box">Box 2</div>
  <div class="box">Box 3</div>
</div>

.container {
  position: relative;
}

.box {
  position: absolute;
  top: 0;
  left: 0;
  width: 200px;
  height: 200px;
  background-color: #f1f1f1;
  border: 1px solid #ccc;
}

.box:nth-child(2) {
  top: 50px;
  left: 50px;
}

.box:nth-child(3) {
  top: 100px;
  left: 100px;
}