The height CSS descriptor is a shorthand descriptor for setting both min-height and max-height of the viewport. by providing one viewport length value will set both, the minimum height and the maximum height, to the value provided.

If two viewport values are provided, the first value will set the minimum height and the second value will set the maximum height.

Related at-rule@viewport
Initial valueas each of the properties of the shorthand:
Percentagesas each of the properties of the shorthand:
  • min-height: The percentage is calculated with respect to the height of the generated box's containing block. If the height of the containing block is not specified explicitly (i.e., it depends on content height), and this element is not absolutely positioned, the percentage value is treated as 0.
  • max-height: The percentage is calculated with respect to the height of the generated box's containing block. If the height of the containing block is not specified explicitly (i.e., it depends on content height), and this element is not absolutely positioned, the percentage value is treated as none.
Mediaas each of the properties of the shorthand:
Computed valueas each of the properties of the shorthand:
  • min-height: the percentage as specified or the absolute length
  • max-height: the percentage as specified or the absolute length or none
Canonical orderorder of appearance in the formal grammar of the values

Syntax

/* One value */
height: auto;
height: 320px;
height: 15em;

/* Two values */
height: 320px 200px;

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>{1,2}

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

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

Example

@viewport {
  height: 500px;
}

Specifications

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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support29 ? No10 -ms-

16

11.1 — 15

No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support4.429 ? No

16

11.1 — 14

No Yes

Document Tags and Contributors

Contributors to this page: fscholz, mfluehr, Sebastianz, tuttza
Last updated by: fscholz,