@viewport.height

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 value	as each of the properties of the shorthand: min-height: 0 max-height: none
Percentages	as 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.
Media	visual, continuous
Computed value	as 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 order	order 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