保持div高度与宽高比相关 [英] Keep div height relevant to aspect ratio

问题描述

我正在建立我们公司主网站的移动友好网站。它的设计方式是视网膜的2倍。我计划做的是将主要内容设置为最大宽度为640像素，宽度设置为100％。我有一个特定的背景图像，很适合做到这一点。但随着div的宽度变小，我需要调整高度。任何想法？

I'm working on building a mobile friendly site of our companies main website. The way it is designed is around 2x for retina. What I'm planning to do is set the main content around a maximum width of 640px, width set at 100%. I have a certain background image that fits nicely do that. But as the width of the div gets smaller, I need the height to adjust as well. Any ideas?

这里是css：

*{margin:0;padding:0}h1,h2,h3,h4,h5,p,li,a,cite{font-size:14px;font-weight:normal}button,img{border:0}body{font-family:Arial, sans-serif;}

body {
  margin:0;
  background-color:#fff;
}

.top, .body {
  max-width:640px;
  width:100%;
  margin:0 auto;
}

.top {
  background: white url(images/top.jpg) no-repeat;
  background-size:auto;
  overflow:hidden;
  height:124px;
  max-height:124px;
}

.top ul {
  list-style:none;
  height:100%;
}

.top ul li {
  height:100%;
  float:left;
  display:block;
}

推荐答案

这个。它添加了一点无意义的标记，但工​​作得很好。
可以在这里找到： http://jsfiddle.net/AdQ3P/

I did find an answer to this. It adds a little bit of unsemantic markup, but works well. Can find it here: http://jsfiddle.net/AdQ3P/

逻辑在填充底部。基本上这需要是（img_height / img_width）* 100。

The logic is in the padding-bottom. basically this needs to be (img_height / img_width) * 100.

编辑这里是代码，所以不依赖于jsfiddle。

Edit Here's the code, so not dependent on jsfiddle.

<div class="container">
  <div class="hero"></div>
</div>

.container {
  width:100%;
  max-width:500px;
}

.hero {
  width:100%;
  height:0;
  background-size:100%;
  background:url(http://img97.imageshack.us/img97/3410/photo2ue.jpg) no-repeat;
  padding-bottom:75%;
}

这也是一个凌乱的办公桌我有lol。

Also that was one messy desk i had lol.

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