如何使 flex 项目可滚动且内容溢出，列

Question

我有一支笔，是我鼓起的。我有一个面板部分，里面有方形 div，有一个列方向，但出于某种原因，我无法使该面板部分可滚动以适应内部的 div 和高度。我试过 overflow-y: auto，但它的行为不正常。现在这些盒子只是收缩到位。

.panel-section {
      flex-basis: 18vw;
      background-color: #BFFD19;
      padding-top: 15px;
      padding-left: 15px;
      padding-right: 30px;

      min-height: 0px;
      display: flex;
      flex-direction: column;
      .thumbnail-holder {
        margin-bottom: 15px;
        background-color: #6036AD;
        width: 95%;
        height: 160px;
      }
    }
  }

https://codepen.io/anon/pen/OzKKgy

面板部分（右侧）和框是缩略图。我读过其他关于溢出的文章，但这些技术对我不起作用。

Answer 1

要使 .panel-section 可滚动，请将 overflow: auto 添加到其规则中。

然后，作为弹性项目的默认 flex-shrink 值是 1，这意味着它被设置为 收缩以适应 其父级，添加 flex-shrink: 0 .thumbnail-holder，他们会保持身高。

另外，一个修复，i.a。 Firefox需要的，就是在.top-section上设置min-height: 0;，让其小于其内容。

注意，为了避免在视口上出现垂直滚动条，并且更容易看到 .panel-section 上的滚动条，我将 modal-content 元素上的内联样式更改为 width:100%（% 而不是 vw）。

Updated codepen

堆栈片段

.modal-content {
  display: flex;
  flex-direction: column;
}
.modal-content .top-section {
  background-color: #2EC55C;
  flex-grow: 1;
  min-height: 0;
  display: flex;
}
.modal-content .top-section .content-section {
  flex-grow: 1;
  background-color: #6733FC;
  display: flex;
  flex-direction: column;
}
.modal-content .top-section .content-section .title-section {
  background-color: #21DE71;
  flex-basis: 10vh;
}
.modal-content .top-section .content-section .beer-section {
  background-color: #FA64FF;
  flex-grow: 1;
  display: flex;
}
.modal-content .top-section .content-section .beer-section .image-section {
  background-color: #90FF00;
  flex-basis: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-content .top-section .content-section .beer-section .image-section .image-container {
  background-color: #FBA02B;
  height: 72vh;
  width: 55vh;
}
.modal-content .top-section .content-section .beer-section .text-section {
  background-color: #F63333;
  flex-basis: 50%;
}
.modal-content .top-section .panel-section {
  flex-basis: 18vw;
  background-color: #BFFD19;
  padding-top: 15px;
  padding-left: 15px;
  padding-right: 30px;
  min-height: 0px;
  display: flex;
  flex-direction: column;
  overflow: auto;
}
.modal-content .top-section .panel-section .thumbnail-holder {
  margin-bottom: 15px;
  background-color: #6036AD;
  width: 95%;
  height: 160px;
  flex-shrink: 0;
}
.modal-content .bottom-section {
  background-color: #4283FA;
  flex-basis: 10vh;
}
@media (max-width: 1100px) {
  .modal-content .top-section .panel-section {
    flex-basis: 25vw;
  }
}
@media (max-width: 450px) {
  .modal-content .top-section .panel-section {
    display: none;
  }
}

<div class="modal-content" style="height:100vh;width:100%;">
  <div class="top-section">
    <div class="content-section">
      <div class="title-section">

      </div>
      <div class="beer-section">
        <div class="image-section">
          <div class="image-container">

          </div>
        </div>
        <div class="text-section">

        </div>
      </div>
    </div>
    <div class="panel-section">
      <div class="thumbnail-holder">
      </div>
      <div class="thumbnail-holder">
      </div>
      <div class="thumbnail-holder">
      </div>
      <div class="thumbnail-holder">
      </div>
      <div class="thumbnail-holder">
      </div>
    </div>
  </div>
  <div class="bottom-section">

  </div>
</div>

如何使 flex 项目可滚动且内容溢出，列

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