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 media feature can be used to apply styles based on the width-to-height aspect ratio of the 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 compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support ? ? ? ? ?
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? ? ? ? ?


Document Tags and Contributors

 Contributors to this page: mfluehr, mrenty, kscarfone, cvrebert
 Last updated by: mfluehr,