This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. 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.


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
Basic support Yes ? Yes ? ? ?
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support ? Yes ? Yes ? ? ?

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