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CSS3 Box-sizing

Last updated on : 2023-03-20

Note:

CSS3 Box-sizing shows a browser compatibility score of 100. This is a collective score out of 100 to represent browser support of a web technology. The higher this score is, the greater is the browser compatibility. The browser compatibility score is not a 100% reflection for every browser and the web technology support. However, it does give you an estimate on how much you should rely on a particular web technology in terms of browser compatibility.

Overview

.css3-boxsizing is a property used to specify whether or not an element’s border and padding should be included in the element’s computed width, height and margin.

Formal Definition

Inherited

Applies to

all elements that accept width or height

Initial value

content-box

Animation type

discrete

Computed value

as specified

Specifications

CSS Box Sizing Module Level 3 # box-sizing

Syntax

box-sizing: border-box;
 box-sizing: content-box;
 /* Global values */
 box-sizing: inherit;
 box-sizing: initial;
 box-sizing: revert;
 box-sizing: unset;

Code snippets

style.css

Source:style.css

Browser Compatibility

CSS3 Box-sizing on IE is fully supported on 8-11, partially supported on None of the versions, and not supported on 5.5-7 IE versions.
CSS3 Box-sizing on Edge is fully supported on 12-111, partially supported on None of the versions, and not supported on below 12 Edge versions.
CSS3 Box-sizing on Firefox is fully supported on 2-113, partially supported on None of the versions, and not supported on below 2 Firefox versions.
CSS3 Box-sizing on Chrome is fully supported on 4-114, partially supported on None of the versions, and not supported on below 4 Chrome versions.
CSS3 Box-sizing on Safari is fully supported on 3.2-16.4, partially supported on None of the versions, and not supported on below 3.2 Safari versions.
CSS3 Box-sizing on Opera is fully supported on 9.5-95, partially supported on None of the versions, and not supported on 9-9 Opera versions.
CSS3 Box-sizing on Safari on iOS is fully supported on 3.2-16.4, partially supported on None of the versions, and not supported on below 3.2 Safari on iOS versions.
CSS3 Box-sizing on Android Browser is fully supported on 2.1-111, partially supported on None of the versions, and not supported on below 2.1 Android Browser versions.
CSS3 Box-sizing on Opera Mobile is fully supported on 10-73, partially supported on None of the versions, and not supported on below 10 Opera Mobile versions.
CSS3 Box-sizing on Chrome for Android is fully supported on 97-111, partially supported on None of the versions, and not supported on below 97 Chrome for Android versions.
CSS3 Box-sizing on Firefox for Android is fully supported on 95-110, partially supported on None of the versions, and not supported on below 95 Firefox for Android versions.
CSS3 Box-sizing on Samsung Internet is fully supported on 4-20, partially supported on None of the versions, and not supported on below 4 Samsung Internet versions.

100

High

Browser Compatibility Score

High

Browser Support For IE Versions

8-11

Fully

Partially

5.5-7

No Support

Edge

High

Browser Support For Edge Versions

12-111

Fully

Partially

No Support

Firefox

High

Browser Support For Firefox Versions

2-113

Fully

Partially

No Support

Chrome

High

Browser Support For Chrome Versions

4-114

Fully

Partially

No Support

Safari

High

Browser Support For Safari Versions

3.2-16.4

Fully

Partially

No Support

Opera

High

Browser Support For Opera Versions

9.5-95

Fully

Partially

9-9

No Support

Safari on iOS

High

Browser Support For Safari on iOS Versions

3.2-16.4

Fully

Partially

No Support

Android Browser

High

Browser Support For Android Browser Versions

2.1-111

Fully

Partially

No Support

Opera Mobile

High

Browser Support For Opera Mobile Versions

10-73

Fully

Partially

No Support

Chrome for Android

High

Browser Support For Chrome for Android Versions

97-111

Fully

Partially

No Support

Firefox for Android

High

Browser Support For Firefox for Android Versions

95-110

Fully

Partially

No Support

Samsung Internet

High

Browser Support For Samsung Internet Versions

4-20

Fully

Partially

No Support

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Last Modified date

2023-03-20