W3cubDocs

/CSS

@viewport.min-width

The min-width CSS descriptor specifies the minimum width of the viewport of a document defined via @viewport.

By default, min-width is set as close as possible to the initial viewport considering the minimum width constraint.

Related at-rule @viewport
Initial value auto
Percentages refer to the width of the initial viewport
Media as each of the properties of the shorthand:
Computed value if specified as a length, the corresponding absolute length; if specified as a percentage, the specified value; otherwise, auto
Canonical order the unique non-ambiguous order defined by the formal grammar

Syntax

/* Keyword value */
min-width: auto;

/* <length> values */
min-width: 320px;
min-width: 40em;
min-width: 5cm;

/* <percentage> value */
min-width: 25%;

Values

auto
The used value is calculated from the other CSS descriptors' values.
<length>
A non-negative absolute or relative length.
<percentage>
A percentage value relative to the width or height of the initial viewport at zoom factor 1.0, for horizontal and vertical lengths respectively. Must be non-negative.

Formal syntax

<viewport-length>

where
<viewport-length> = auto | <length-percentage>

where
<length-percentage> = <length> | <percentage>

Specifications

Specification Status Comment
CSS Device Adaptation
The definition of '"min-width" descriptor' in that specification.
Working Draft Initial definition

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 29 ? No 10
Prefixed
10
Prefixed
Prefixed Requires the vendor prefix: -ms-
16
16
11.1 — 15
No
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support 4.4 29 ? No ? No Yes

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/@viewport/min-width