What are the common units in css3

This article mainly introduces "what are the common units in css3". In daily operation, I believe many people have doubts about what are the common units in css3. Xiaobian consulted all kinds of information and sorted out simple and easy operation methods. I hope to help you answer the doubts about "what are the common units in css3"! Next, please follow the small series to learn together!

1.px: Absolute units, pages 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, it will be calculated according to itself (the default font of browser is 16px). 1em is not a fixed value in the whole page.

3.rem: Relative units, can be understood as "root em", relative to the font size of the root node html to calculate, CSS3 new attributes, chrome/firefox/IE9+ support.

vw: Viewpoint width, window width, 1vw = 1% of window width.

vh: Viewpoint height, window height, 1vh = 1% of window height.

vmin: The smaller of vw and vh.

vmax: The larger of vw and vh.

8.%: percentage

9.in: inch

10.cm: cm

11.mm: mm

12.pt point, approximately 1/72 inch

13.pc:pica, approximately 6pt, 1/6 inch

14.ex: take the height of x of the font currently working, calculate it as 0.5em if x height cannot be determined (IE11 and below are not supported, firefox/chrome/safari/opera/ios safari/android browser4.4+ and other attributes are required plus no prefix)

15.ch Based on the "0" character in the font used by the node, 0.5em(ie10+,chrome31+, safair7.1 +,opera26+,ios safari 7.1+,android browser4.4+ support)

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