index.md

---

title: width
slug: Web/CSS/@media/width
page-type: css-media-feature
browser-compat: css.at-rules.media.width

---

{{CSSRef}}

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

Syntax

The width feature is specified as a {{cssxref("<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

{{EmbedLiveSample('Examples','90%')}}

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• Using Media Queries

• @media