这是设计师一直在处理的一个令人沮丧的问题。诀窍是你需要在CSS中的BODY和HTML上设置高度为100%。

html,body {
    height:100%;
}

这段看似毫无意义的代码是为了向浏览器定义100%的含义。的确令人沮丧，但这是最简单的方法。

注意:此答案适用于不支持Flexbox标准的旧浏览器。有关现代方法，请参见:https://stackoverflow.com/a/23300532/1155721

我建议你看看跨浏览器CSS的等高列，没有黑客。

基本上，以浏览器兼容的方式使用CSS来实现这一点并不简单(但是对于表来说很简单)，所以请找到一个适当的预打包解决方案。

同样，答案也取决于你想要100%的高度还是相同的高度。通常都是等高的。如果是100%高，答案就略有不同。

#main {
   display: table;
} 
#navigation, #content {
   display: table-cell;
}

看看这个例子。

如前所述，flexbox是最简单的。 如。

#main{ display: flex; align-items:center;}

这将使所有子元素对齐到父元素的中心。

我的解决方案:

$(window).resize(function() {
   $('#div_to_occupy_the_rest').height(
        $(window).height() - $('#div_to_occupy_the_rest').offset().top
    );
});

下面的代码提供了设置滚动div的最小高度的能力，并通过使用flex使其具有其父div的100%高度。

CSS:

.main {
  display: flex;
  flex-direction: column;
}

.scroll {
  overflow: auto;
  flex: 1 0 50px;
}

HTML:

<div class="main">
  <div class="scroll">
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    Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
    Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
  </div>
</div>