blocks|key|5153538|text|在HTML文档的head中添加以下内容：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5153539|<meta+name="viewport"+content="width=device-width,+initial-scale=1"/>|5153540|entityMap^0|8|4|0|0|1X|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|P|8|@]|D|@]|E|$]]]|I|$]]

Add this in the <code>head</code> of your HTML document:

<code>&lt;meta name="viewport" content="width=device-width, initial-scale=1"/&gt;</code>

blocks|key|5437646|text|编写max-device-width而不是max-width|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5437647|<link+rel="stylesheet"+media="screen+and+(max-device-width:960px)"+type="text/css"+href="css/mobileStyles.css">
<link+rel="stylesheet"+media="screen+and+(max-device-width:640px)"+type="text/css"+href="css/mobilePortraitStyles.css">|code-block|syntax|javascript|5437648|另外，最好是这样定义他们的orientation：|5437649|<link+rel="stylesheet"+media="screen+and+(orientation:portrait)"+href="portrait.css">
<link+rel="stylesheet"+media="screen+and+(orientation:landscape)"+href="landscape.css">|5437650|entityMap^0|2|G|L|9|0|0|D|B|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

Write <code>max-device-width</code> instead of <code>max-width</code>

<pre><code>&lt;link rel="stylesheet" media="screen and (max-device-width:960px)" type="text/css" href="css/mobileStyles.css"&gt;
&lt;link rel="stylesheet" media="screen and (max-device-width:640px)" type="text/css" href="css/mobilePortraitStyles.css"&gt;
</code></pre>

Also, it's better if you define their <code>orientation</code> like this:

<pre><code>&lt;link rel="stylesheet" media="screen and (orientation:portrait)" href="portrait.css"&gt;
&lt;link rel="stylesheet" media="screen and (orientation:landscape)" href="landscape.css"&gt;
</code></pre>

blocks|key|5153599|text|对于这两种显示类型，iPhone+safari浏览器的web视图大小都是320x480px或480x320px。因此，web开发人员不需要为非Retina和Retina显示调整css的大小。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5153600|仅针对Retina显示屏|5153601|<link+rel="stylesheet"+media="only+screen+and+(-webkit-min-device-pixel-ratio:+2)"+type="text/css"+href="../iphone4.css"+/>|code-block|syntax|javascript|5153602|在你的例子中，加载第二个样式表是因为在两种情况下(320或480px)你的web视图都低于640px。|5153603|我建议您使用方向作为css媒体查询的情况。|5153604|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

the web view size of iPhone safari browser is either 320x480px or 480x320px in landscape for both display type. so the web developer don't need to resize his css for Non-Retina and Retina Displays.

For targeting only Retina Display

<pre><code>&lt;link rel="stylesheet" media="only screen and (-webkit-min-device-pixel-ratio: 2)" type="text/css" href="../iphone4.css" /&gt;
</code></pre>

In your case the the second style sheet is loaded because in both cases (320 or 480px) your web view is under 640px.

i would recommend to use orientation as css media query for you case.

I have these 2 rules:

<pre><code>&lt;link rel="stylesheet" media="screen and (max-width:960px)" type="text/css" href="css/mobileStyles.css"&gt;
&lt;link rel="stylesheet" media="screen and (max-width:640px)" type="text/css" href="css/mobilePortraitStyles.css"&gt;
</code></pre>

They work on my browser (when I adjust the browser width) but when I check them on my iPhone, either portrait or landscape, it loads both style sheets.

Why on landscape view it loads the 640px style sheet?

Why won't my iPhone tell the difference between 960px & 640px style sheets

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有两条规则：<link rel="stylesheet" media="screen and (max-width:960px)" type="text/css" href="css/mobileStyles.css"><link rel="stylesheet" media="screen and (max-wid...

问为什么我的iPhone不能区分960px和640px样式表
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