Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

Note: To query for the width of the viewport, developers should use the width media feature instead.

The device-width CSS media feature can be used to test the width of an output device's rendering surface.


The device-width feature is specified as a <length> value. It is a range feature, meaning that you can also use the prefixed min-device-width and max-device-width variants to query minimum and maximum values, respectively.


Applying a special stylesheet for devices that are narrower than 800 pixels

  media="screen and (max-device-width: 799px)"
  href="" />


Media Queries Level 4
# device-width

Browser compatibility

BCD tables only load in the browser

See also