What is the difference between unit percentage and px in css style

This article mainly introduces the difference between the unit percentage and px in the css style, which has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to know about it.

Differences: 1, for ordinary elements, the percentage unit size will change with the size of the parent element, while the size of px units is fixed; 2, for fixed positioning elements, the percentage unit size changes with the size of the browser window, the size of px units is fixed.

The operating environment of this tutorial: windows10 system, CSS3&&HTML5 version, Dell G3 computer.

What is the difference between css style unit percentage and px

Px: a pixel is a fixed-size unit used for screen media (that is, read on a computer screen).

A pixel is equal to a point on a computer screen (the minimum partition of your screen resolution). Many web designers use pixel units in web documents to produce web sites with perfectly rendered pixels rendered by browsers. One problem with pixel units is that they are not extended for visually impaired readers to accommodate mobile devices.

% units are generally broad relative to the parent element, but they are not very accurate.

For ordinary positioning elements, we understand that the parent element, for position: absolute; element is relative to the positioned parent element, and for position: fixed; element is relative to ViewPort (visual window)

The percentage varies with the size of the browser window. Px is a fixed size and can be combined to be used according to the actual situation.

Examples are as follows:

Document div {width:20%; height:300px; background:pink;}

When changing the size of the browser window, output the result:

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