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Summary
The orientation CSS descriptor controls the orientation of a document defined by @viewport.
For a UA/device where the orientation is changed upon tilting the device, an author can use this descriptor to inhibit the orientation change.
| Related at-rule | @viewport |
|---|---|
| Initial value | auto |
| Percentages | refer to the size of bounding box |
| Media | visual, continuous |
| Computed value | as specified |
| Canonical order | the unique non-ambiguous order defined by the formal grammar |
Syntax
/* Keyword values */ orientation: auto; orientation: portrait; orientation: landscape;
Values
auto- The user agent will set the document's orientation automatically, typically based on the device's orientation as determined by an accelerometer (if the device has such a hardware sensor), although there is often a user-controlled, OS-level "Lock orientation" setting that will trump the accelerometer reading.
portrait- The document should be locked into portrait orientation.
landscape- The document should be locked into landscape orientation.
Formal syntax
auto | portrait | landscape
Specifications
| Specification | Status | Comment |
|---|---|---|
| CSS Device Adaptation The definition of '"orientation" descriptor' in that specification. |
Working Draft | Initial definition |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | Not supported | Not supported | 10 -ms | Not supported | ? |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | ? | ? | ? | ? | 8 -o | ? |