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max-height

The max-height CSS property sets the maximum height of an element. It prevents the used value of the height property from becoming larger than the value specified for max-height.

max-height overrides height, but min-height overrides max-height.

Syntax

/* <length> value */
max-height: 3.5em;

/* <percentage> value */
max-height: 75%;

/* Keyword values */
max-height: none;
max-height: max-content;
max-height: min-content;
max-height: fit-content;
max-height: fill-available;

/* Global values */
max-height: inherit;
max-height: initial;
max-height: unset;

Values

<length>: The maximum height, expressed as a <length>.
<percentage>: The maximum height, expressed as a <percentage> of the containing block's height. If the height of the containing block is not specified explicitly, the percentage value is treated as zero.

Keyword values

none: The height has no maximum value.
max-content: The intrinsic preferred height.
min-content: The intrinsic minimum height.
fill-available: The containing block's height minus the vertical margin, border, and padding. (Note that some browsers implement an ancient name for this keyword, available.)
fit-content: The same as max-content.

Formal syntax

<length> | <percentage> | none | max-content | min-content | fit-content | fill-available

Examples

table { max-height: 75%; }

form { max-height: none; }

Accessibility concerns

Ensure that elements set with a max-height are not truncated and/or do not obscure other content when the page is zoomed to increase text size.

Specifications

Specification	Status	Comment
CSS Intrinsic & Extrinsic Sizing Module Level 3 The definition of 'max-height' in that specification.	Working Draft	Adds the `max-content`, `min-content`, `fit-content`, and `fill-available` keywords. (Both CSS3 Box and CSS3 Writing Modes drafts used to define these keywords, but are superseded by this spec.)
CSS Transitions The definition of 'max-height' in that specification.	Working Draft	Defines `max-height` as animatable.
CSS Level 2 (Revision 1) The definition of 'max-height' in that specification.	Recommendation	Initial definition.

Initial value	`none`
Applies to	all elements but non-replaced inline elements, table columns, and column groups
Inherited	no
Percentages	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
Computed value	the percentage as specified or the absolute length or `none`
Animation type	a length, percentage or calc();
Canonical order	the unique non-ambiguous order defined by the formal grammar

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	1	12	1 1 CSS 2.1 leaves the behavior of `max-height` with `table` undefined. Firefox supports applying `max-height` to `table` elements.	7	7 7 CSS 2.1 leaves the behavior of `max-height` with `table` undefined. Opera supports applying `max-height` to `table` elements.	1
`fit-content`, `max-content`, and `min-content`	No No Chrome implements an earlier proposal for setting height to an intrinsic height: the keywords `intrinsic` (instead of `max-content`), and `min-intrinsic` (instead of `min-content`). There is no equivalent for `fill-available` or `fit-content`.	No	3 Prefixed 3 Prefixed Prefixed Requires the vendor prefix: -moz- Firefox implements the definitions given in CSS3 Basic Box. This defines `available` and not `fit-available`. Also, the definition of `fit-content` is simpler than in CSS3 Sizing.	No	No	9 9 Safari implements an earlier proposal for setting height to an intrinsic height: the keywords `intrinsic` (instead of `max-content`), and `min-intrinsic` (instead of `min-content`). There is no equivalent for `fill-available` or `fit-content`.
`fill-available`	No	No	No	No	No	No

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	?	?	Yes	?	?	?	?
`fit-content`, `max-content`, and `min-content`	?	?	No	?	?	9 9 Safari implements an earlier proposal for setting height to an intrinsic height: the keywords `intrinsic` (instead of `max-content`), and `min-intrinsic` (instead of `min-content`). There is no equivalent for `fill-available` or `fit-content`.	No
`fill-available`	?	?	No	?	?	?	No