是否可以在flex容器中重叠div并保存其增长和收缩规则？

<style>
  .flex-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: flex-start;
    position: relative;
  }

  .flex-item {
    width: 200px;
    height: 200px;
    background-color: #ccc;
    margin: 10px;
    flex-grow: 1;
    flex-shrink: 1;
  }

  .overlapping-item {
    position: absolute;
    top: 50px;
    left: 50px;
    width: 100px;
    height: 100px;
    background-color: #f00;
    z-index: 1;
  }
</style>

<div class="flex-container">
  <div class="flex-item">Flex Item 1</div>
  <div class="flex-item">Flex Item 2</div>
  <div class="flex-item">Flex Item 3</div>
  <div class="overlapping-item">Overlapping Item</div>
</div>