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Editor to share with you how to use the em unit in css. I hope you will get something after reading this article. Let's discuss it together.

The em unit of a css unit of length

Em is a unit of relative font length, and its unit length is determined by the vertical length of the text of the element. Example: 1em is equivalent to the current font size (font-size attribute), then 2em is equivalent to twice the current font size. If used for other attributes (width,height), it is the font-size relative to its own element. Can be used in width, height, line-height, margin, padding, border and other style settings.

Let's take a look at a simple example to learn about em.

Div {

Font-size:40px

Width:10em

/ * 400px*/

Height:10em

Border:solid1pxblack

}

P {

Font-size:0.5em

/ * 20px*/

Width:10em

/ * 200px*/

Height:10em

Border:solid1pxred

}

Span {

Font-size:0.5em

Width:10em

Height:10em

Border:solid1pxblue

Display:block

}

I am the parent element div

I am the sub-element p

I'm Sun Yuan span.

After reading this article, I believe you have a certain understanding of "how to use em units in css". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for reading!

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