Front-end notepad, fixed front-end notepad

Source: Internet
Author: User

Front-end notepad, fixed front-end notepad

1. When rem is the unit, the font-size of the root element html must be greater than or equal to 12px; otherwise, the default value is font-size: 12px.

In addition, many friends asked me: Why?HtmlIf it is set to 62.5% or 10px, this conversion is invalid? After research, we found that we do not know when to start. rem, which is smaller than 12px or 75%, does not support this conversion, which may be related to the fact that some Browsers Do not support smaller than 12px. So remember: to use rem units, the default html font size must be set to 12px or above.

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