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38 lines
495 B
Markdown
38 lines
495 B
Markdown
---
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title: CSS · Rem in CSS
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slug: rem-css
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tags:
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- CSS
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created: 2022-01-12T09:50:27.000Z
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summary: CSS中的Rem是什么
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lastmod: 2022-05-07T05:32:42.708Z
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---
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默认为浏览器默认字体大小：
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```
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1rem=16px
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```
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改变 rem 为 10px：
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## 1. set px
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```css
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html {
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font-size: 10px;
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}
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```
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> 这种方法会让用户不能改变页面字体大小，不建议用
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## 2. percentage
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设置为用户浏览器字体的大小比例。
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```
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html{
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/* 10px/16px =62.5%*/
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font-size:62.5%;
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}
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```
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