Summary of common units in css
Today I have summarized the 15 most commonly used units in CSS. To help you understand, I will list them one by one below.
1.px: Absolute unit, the page is displayed in precise pixels
2.em: Relative unit, the reference point is the font size of the parent node, if font-size is defined by itself Calculated by itself (the default font of the browser is 16px), 1em is not a fixed value in the entire page.
3.rem: Relative unit, which can be understood as "root em", calculated relative to the font size of the root node html. CSS3 adds a new attribute, supported by chrome/firefox/IE9+.
4.vw：viewpoint width, window width, 1vw is equal to 1% of the window width.
5.vh：viewpoint height, window height, 1vh is equal to 1% of the window height.
6.vmin: The smaller one between vw and vh.
7.vmax: The larger of vw and vh.
8.%: Percentage
9.in: Inch
10.cm: Centimeter
11.mm: Millimeter
12.pt:point, about 1/72 inch
13.pc:pica, about 6pt, 1/6 inch
14.ex: Get the x height of the font of the current effect , calculated as 0.5em when the x height cannot be determined (not supported by IE11 and below, firefox/chrome/safari/opera/ios safari/android browser4.4+, etc. all require attributes) Prefix)
15.ch: Based on the "0" character in the font used by the node, if not found, it is 0.5em (ie10+, chrome31+, safair7.1+, opera26+, ios safari 7.1+, android browser4.4+ support)
I believe you have understood the role of these units after reading this. For more exciting information, please pay attention to the php Chinese website Other related articles!
Related reading:
CSS3’s detailed introduction to the translate attribute
CSS3’s introduction to the background-size attribute Detailed introduction
Tutorial on using the transform attribute in Css3
The above is the detailed content of Summary of common units in css. For more information, please follow other related articles on the PHP Chinese website!
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