Summary
The max-width CSS descriptor specifies the maximum width of the viewport of a document defined via @viewport.
By default, max-width is set as close as possible to the initial viewport width within the minimum and maximum width constraints.
| Related at-rule | @viewport |
|---|---|
| Initial value | auto |
| Percentages | refer to the width of the initial viewport |
| Media | visual, continuous |
| Computed value | if specified as a length, the corresponding absolute length; if specified as a percentage, the specified value; otherwise, auto |
| Canonical order | the unique non-ambiguous order defined by the formal grammar |
Syntax
@viewport {
max-width: 320px;
}
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 syntax
auto | <length> | <percentage>
Specifications
| Specification | Status | Comment |
|---|---|---|
| CSS Device Adaptation The definition of '"min-width" descriptor' in that specification. |
Working Draft | Initial definition |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | 29 (behind a flag) | Not supported | 10 -ms | 11.10 Removed in 15 Reintroduced behind a flag in 16 |
Not supported |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile | ||
|---|---|---|---|---|---|---|---|---|
| Basic support |
|
|
Not supported | 10-ms | 11.10 Removed in 15 Reintroduced behind a flag in 16 |
Not supported |