默认 HTML 字体大小
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Default HTML font size
提问by Romain Braun
I wonder what the default html font-size is and I can't find the answer.
我想知道默认的 html 字体大小是多少，但我找不到答案。
What I mean is this :
我的意思是：
What is the font size in pixels corresponding to this :
与此对应的字体大小（以像素为单位）是多少：
html {
font-size: 100%;
}
It could be useful to know this if you need to calculate rem font sizes.
如果您需要计算 rem 字体大小，了解这一点可能会很有用。
回答by Dryden Long
The default is 16px.
默认值为 16px。
If you create an HTML file with any text in it, open it in Chrome, you can check the computed styles.
如果您创建一个包含任何文本的 HTML 文件，请在 Chrome 中打开它，您可以检查计算出的样式。
回答by ubomb
In the W3 CSS specification, there is no definite default font-sizeother than the relative value medium.
在W3 CSS 规范中，font-size除了相对值之外没有明确的默认值medium。
That being said, a quick test with the developer versions of IE, Firefox, and Chrome all show that the de facto standard is 16px. I would be interested to see someone test this on mobile versions.
话虽如此，对 IE、Firefox 和 Chrome 的开发人员版本的快速测试都表明事实上的标准是 16px。我很想看到有人在移动版本上测试这个。
Edit: As of 2017-03-20, the stable versions of Chrome, Firefox, Edge, and IE on the desktop as well as Chrome, Firefox, and Opera on mobile all default to the de facto standard of 16px for font-size.
编辑：截至 2017 年 3 月 20 日，桌面版 Chrome、Firefox、Edge 和 IE 以及移动版 Chrome、Firefox 和 Opera 的稳定版本均默认为font-size.
回答by CMPS
回答by Jukka K. Korpela
The default is browser-dependent. This is actually the very reason to using the remunit. If we knew that the default is, for example, 16px, there would be little point in using rem.
默认值取决于浏览器。这实际上是使用该rem装置的真正原因。例如，如果我们知道默认值是 ，16px那么使用rem.
As other answers describe, the common factory settingdefault in browsers is 16px. This can be changed by the user, in browser settings. In some browsers, you can set the size to any number in pixels, whereas some browsers have just a few alternatives, described verbally. In addition, the default font size can also be set in a user style sheet.
正如其他答案所描述的那样，浏览器中的常见出厂设置默认值为16px. 这可以由用户在浏览器设置中更改。在某些浏览器中，您可以将大小设置为以像素为单位的任意数字，而某些浏览器只有几种选择，如口头描述。此外，还可以在用户样式表中设置默认字体大小。
