The width CSS descriptor is shorthand for setting both the min-width
and the max-width
descriptors of the viewport. By providing one viewport length value, that value will determine both the min-width
and the max-width
to the value provided.
If two viewport values are provided the first value will be set to the min-width
and the second value will be set max-width
.
Syntax
/* An example with one viewport value: */ @viewport { width: 320px; } /* An example with two viewport values: */ @viewport { width: 320px, 120px; }
Values
auto
- The used value is calculated from the other CSS descriptors' values.
<length>
- A non-negative absolute or relative length.
<percentage>
- A percentage value relative to the width or height of the initial viewport at zoom factor 1.0, for horizontal and vertical lengths respectively. Must be non-negative.
Formal definition
Related at-rule | @viewport |
---|---|
Initial value | as each of the properties of the shorthand: |
Percentages | as each of the properties of the shorthand: |
Computed value | as each of the properties of the shorthand: |
Formal syntax
<viewport-length>{1,2}where
<viewport-length> = auto | <length-percentage>
where
<length-percentage> = <length> | <percentage>
Examples
Setting minimum and maximum width
@viewport { width: 500px; }
Specifications
Specification | Status | Comment |
---|---|---|
CSS Device Adaptation The definition of '"min-width" descriptor' in that specification. |
Working Draft | Initial definition |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
width descriptor | Chrome No support 29 — 84 | Edge
Full support
12
| Firefox No support No | IE
Full support
10
| Opera
Full support
16
| Safari No support No | WebView Android No support 4.4 — 37 | Chrome Android No support 29 — 84 | Firefox Android No support No | Opera Android
Full support
16
| Safari iOS No support No | Samsung Internet Android Full support 2.0 |
Legend
- Full support
- Full support
- No support
- No support
- Requires a vendor prefix or different name for use.
- Requires a vendor prefix or different name for use.