@viewport.orientation

The orientation CSS descriptor controls the orientation of a document defined by @viewport.

/* Keyword values */
orientation: auto;
orientation: portrait;
orientation: landscape;

For a UA/device where the orientation is changed upon tilting the device, an author can use this descriptor to inhibit the orientation change.

Syntax

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 definition

Formal syntax

auto | portrait | landscape

Examples

Setting viewport orientation

@viewport {
  orientation: landscape;
}

Specifications

Browser compatibilityUpdate compatibility data on GitHub

See also

• @viewport