IE 11 中的 Flexbox 重叠

Question

我目前正在调试一个网站以使其在 IE 11 上运行。如果 flexbox 容器中有两个 div table，现在只有一个页面。在容器下面，还有一个 flexbox 'navLine'，应该直接放在容器下面。这在除 IE 11 之外的所有浏览器中都可以正常工作。容器和 navLine 似乎重叠。奇怪的是，navLine 粘在容器内的一个按钮上。该按钮位于 div table 的单元格内，没有任何其他 CSS 属性。有帮助吗？

这是简化的代码：

#NavLine
{
  margin-bottom: 8px;
  display: -webkit-flex;
  display: -ms-flex;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.SelectionBox
{
  background: #f7f7f7;
  border: 1px solid #d9d9d9;
  padding: 16px;
  margin-bottom: 16px;
  min-width: 570px;
  min-height: 410px;
}

.Container
{
  display: -webkit-flex;
  display: -ms-flex;
  display: flex;
  -webkit-justify-content: space-around;
  -ms-justify-content: space-around;
  justify-content: space-around;
  width: 100%;
  flex: 1 1 auto;
}

#Box1, #Box2
{
  flex: 1 1 auto;
  padding: 16px;
}

.Table
{
  display: table;
  table-layout: fixed;
  overflow: hidden;
  height: 100%;
  width: 75%;
}
.Title
{
  display: table-header-group;
  width: 100%;
  height: 80px;
}
.Row
{
  display: table-row;
}
.Cell
{
  display: table-cell;
  padding-left: 5px;
  padding-right: 5px;
  vertical-align: middle;
  height: 70px;
}

<div class="Container">

  <!-- First Box -->
  <div id="Box1">
    <div class="Table SelectionBox">
      <div class="Title">
        <h2>Box One</h2>
      </div>
      <div class="Row">
        <div class="Cell">
          <span>Some Item</span>
        </div>
        <div class="Cell">
          <span>Some Value</span>
        </div>
      </div>
      <div class="Row">
        <div class="Cell">
          <span>Some Item</span>
        </div>
        <div class="Cell">
          <span>Some Value</span>
        </div>
      </div>
      <div class="Row">
        <div class="Cell">
          <span>Some Item</span>
        </div>
        <div class="Cell">
          <span>Some Value</span>
        </div>
      </div>
      <div class="Row">
        <div class="Cell">
          <span>Some Item</span>
        </div>
        <div class="Cell">
          <span>Some Value</span>
        </div>
      </div>

      <div class="Row">
        <div class="Cell"></div>
        <div class="Cell">
          <span> ([[result]]) Results</span>
          <span>Reset (this is a button)</span>
        </div>
      </div>
    </div>
  </div>


  <!-- Second Box -->
  <div id="Box2">
    <div class="Table SelectionBox">
      <div class="Title">
        <h2>Box Two</h2>
      </div>
      <div class="Row">
        <div class="Cell">
          <span>Some Item</span>
        </div>
        <div class="Cell">
          <span>Some Value</span>
        </div>
      </div>
      <div class="Row">
        <div class="Cell">
          <span>Some Item</span>
        </div>
        <div class="Cell">
          <span>Some Value</span>
        </div>
      </div>
      <div class="Row">
        <div class="Cell">
          <span>Some Item</span>
        </div>
        <div class="Cell">
          <span>Some Value</span>
        </div>
      </div>
      <div class="Row">
        <div class="Cell">
          <span>Some Item</span>
        </div>
        <div class="Cell">
          <span>Some Value</span>
        </div>
      </div>

      <div class="Row">
        <div class="Cell"></div>
        <div class="Cell">
          <span> ([[result]]) Results</span>
          <span>Reset (this is a button)</span>
        </div>
      </div>
    </div>
  </div>
</div>

<div id="NavLine">
  <span>Back</span>
  <span>Next</span>
</div>

Answer 1

"IE 11 requires a unit to be added to the third argument, the flex-basis property" - 请参阅 "known issues" 选项卡 https://caniuse.com/#feat=flexbox

此外，可能需要最小高度

所以，举个例子：

#container > div {
   flex:1 1 8em;
   min-height:8em;
}

Answer 2

IE 中的问题是 .Table.SelectionBox 中的 height: 100% 导致该元素溢出其容器 (#Box1)。然后它与 #NavLine 元素重叠，这不会导致任何问题。

解决此问题的一种方法是删除该高度规则。

IE 11 中的 Flexbox 重叠

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