Include padding and border in the element's total width and height:
#example1 <More "Try it Yourself" examples below.
The box-sizing property defines how the width and height of an element are calculated: should they include padding and borders, or not.
Default value: | content-box |
---|---|
Inherited: | no |
Animatable: | no. Read about animatable |
Version: | CSS3 |
JavaScript syntax: | object.style.boxSizing="border-box" Try it |
The numbers in the table specify the first browser version that fully supports the property.
Numbers followed by -webkit- or -moz- specify the first version that worked with a prefix.
Property | |||||
---|---|---|---|---|---|
box-sizing | 10.0 4.0 -webkit- | 8.0 | 29.0 2.0 -moz- | 5.1 3.2 -webkit- | 9.5 |
Value | Description | Demo |
---|---|---|
content-box | Default. The width and height properties (and min/max properties) includes only the content. Border and padding are not included | Demo ❯ |
border-box | The width and height properties (and min/max properties) includes content, padding and border | Demo ❯ |
initial | Sets this property to its default value. Read about initial | |
inherit | Inherits this property from its parent element. Read about inherit |
Specify two bordered boxes side by side:
div <Set the "universal box-sizing":
* <
If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail:
sales@w3schools.com
If you want to report an error, or if you want to make a suggestion, send us an e-mail:
help@w3schools.com
W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness
of all content. While using W3Schools, you agree to have read and accepted our terms of use, cookie and privacy policy.