css media feature

`width` CSS media feature

The width CSS media feature can be used to test the width of the viewport (or the page box, for paged media).

Syntax

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.

Examples

HTML

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

CSS

/* 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;
  }
}

Result

Interactive exampleOpen the canonical MDN source to run this embedded demo.

Specifications

SpecificationsStandards references are available on the canonical MDN page.

Browser compatibility

Browser compatibilityCompatibility data is available on the canonical MDN page.