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.

The device-aspect-ratio CSS media feature can be used to test the width-to-height aspect ratio of an output device.


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


Using min-device-aspect-ratio

article {
  padding: 1rem;

@media screen and (min-device-aspect-ratio: 16/9) {
  article {
    padding: 1rem 5vw;


Specification Status Comment
Media Queries Level 4
The definition of 'device-aspect-ratio' in that specification.
Candidate Recommendation Deprecated in Media Queries Level 4.
Media Queries
The definition of 'device-aspect-ratio' in that specification.
Recommendation Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

Chrome Edge Firefox Internet Explorer Opera Safari
device-aspect-ratio media feature 1 12 2 9 10 3
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
device-aspect-ratio media feature ≤37 18 4 10.1 1 1.0

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