CSS：使div可调整大小

Question

假设我有一个flex布局，并希望使其可调整大小。

我希望能够通过水平拖动边框来调整一个div的大小。

看看这个Fiddle

HTML

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#main {
  display: flex;
  justify-content: space-between;
  height: 100vh;
  .flex {
    width: 100%;
    &:nth-child(2) {
      background: red;
      overflow: auto; resize: horizontal;
    }
  }
}

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<div id="main">
  <div class="flex">ABC</div>
  <div class="flex">
    DEF
  </div>
  <div class="flex">GHI</div>
</div>

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我该怎么做？

Answer 1

检查这个plunkr

https://plnkr.co/edit/sxs6RLXVV6REzQnipfgj?p=preview

$( "#second" ).resizable();

Answer 2

您应该遵循此代码

#main {
    display: flex;
    justify-content: space-between;
    height: 100vh;
    .flex {
        width: 100%;
        &:nth-child(2) {
            background: red;
            resize: both;
            overflow: auto;
        }
    }
}