How to implement square in css

How to implement square in css: first create an HTML sample file; then calculate m to the nth power through the "mⁿ" tag syntax.

The operating environment of this tutorial: windows7 system, HTML5&&CSS3 version, Dell G3 computer.

Related recommendations: "css video tutorial"

html/css to implement square representation

Requires the use of tags< sup>

^{tag defines superscript text. Superscripted text will be displayed above a baseline that is half the height of the characters in the current text stream, but in the same font and size as the text in the current text stream.}

Example:

Usage:

m的n次方 = m<sup>n</sup>

Supplement:

How to calculate multiple powers in javascript?

Math.pow(2,4); //表示2的4次幂，等于16

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