The width CSS @media media feature can be used to apply styles based on the width of the viewport (or the page box, for paged media).


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



<div>Watch this element as you resize your viewport's width.</div>


/* Exact width */
@media (width: 360px) {
  div {
    color: red;

/* Minimum width */
@media (min-width: 35rem) {
  div {
    background: yellow;

/* Maximum width */
@media (max-width: 50rem) {
  div {
    border: 2px solid blue;



Specification Status Comment
Media Queries Level 4
The definition of 'width' in that specification.
Candidate Recommendation The value can now be negative, in which case it computes to false.
Media Queries
The definition of 'width' in that specification.
Recommendation Initial definition. The value must be nonnegative.

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 (Yes) (Yes) 9.0 (Yes) (Yes)
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? ? ? ? ?

Document Tags and Contributors

 Contributors to this page: mfluehr, Prinz_Rana, cvrebert, LightGuard, sjakthol, kscarfone, RufusCSharma
 Last updated by: mfluehr,