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IE8のmax-heightとoverflowのバグ

Last updated at Posted at 2013-07-04

地味にハマったのでメモ。

max-heightを設定してoverflowをscrollやautoにすると、IE8ではmax-heightが普通のheightのように設定されてしまう。
回避策としてdivを入れ子にしてoverflowを設定後、その中に再度divを設定してmax-heightの設定をするときちんと表示される。

全くもって意味の分からない話だが、どうやらIE8のバグらしい。
このためにわざわざCSSを別々に分けて入れ子にするという手間のかかりよう…。

####ダメな例

CSS
.AAA { max-height:300px; overflow:scroll;}
HTML
<div class="AAA">
     <table>
          <tr>
             <td>contents2</td>
             <td>contents2</td>
          </tr>
            ~
          <tr>
             <td>contents3</td>
             <td>contents4</td>
          </tr>
     </table>
</div>

####いい例

CSS
.AAA { overflow:scroll;}
.BBB { max-height:300px;}
HTML
<div class="AAA">
  <div class="BBB">
     <table>
          <tr>
             <td>contents1</td>
             <td>contents2</td>
          </tr>
            ~
          <tr>
             <td>contents3</td>
             <td>contents4</td>
          </tr>
     </table>
  </div>
</div>
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