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px转rem的单位比例，默认为40 #31

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fish0205 opened this issue Jul 13, 2018 · 2 comments
Open

px转rem的单位比例，默认为40 #31

fish0205 opened this issue Jul 13, 2018 · 2 comments

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@fish0205
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麻烦问一下：
转换的比例值是怎么计算的呢？
默认是40的意思是750px下比例为40吗？
万分感谢
@ming2xiao
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ming2xiao commented Jul 15, 2018 •
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rem的转换是根据html标签设置的font-size大小进行转换的，如果你html的font-size设置的是20，那就是说1rem 就等于20px，750px的设计稿为iphone6的设计稿，在浏览器调试的时候你会发现宽度为375px，刚好是设计稿的一半，所以如果html的font-size设置的是20px，那么你用750的设计稿量出来的尺寸除以40就是你需要的rem单位。

@fish0205
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万分感谢，非常详细，明白了

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@ming2xiao @fish0205