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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.

Try it

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(20em);

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

Values

<length>

Defines the max-height as an absolute value.

<percentage>

Defines the max-height as a percentage of the containing block's height.

none

No limit on the size of the box.

max-content

The intrinsic preferred max-height.

min-content

The intrinsic minimum max-height.

fit-content(<length-percentage>)

Uses the fit-content formula with the available space replaced by the specified argument, i.e. min(max-content, max(min-content, argument)).

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.

Formal 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.
Computed value the percentage as specified or the absolute length or none
Animation type a length, percentage or calc();

Formal syntax

max-height = 
none |
<length-percentage [0,∞]> |
min-content |
max-content |
fit-content( <length-percentage [0,∞]> )

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

Examples

Setting max-height using percentage and keyword values

table {
  max-height: 75%;
}

form {
  max-height: none;
}

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
max-height 18 12
1CSS 2.1 leaves the behavior of max-height with table undefined. Firefox supports applying max-height to table elements.
7
7CSS 2.1 leaves the behavior of max-height with table undefined. Opera supports applying max-height to table elements.
1.3 ≤37 18 4 14 1 1.0
fit-content 4625 7979
3Firefox 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 44 1172 464.4 4625
4Firefox 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.
43 1171 5.01.5
fit-content_function No No 91 No No No No No No No No No
max-content 46 79 663 No 44 119 46 46 664 43 119 5.0
min-content 46 79 663 No 44 119 46 46 664 43 119 5.0
stretch 28 79 No No 15 No 4.4 28 No 15 No 1.5

See also

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https://developer.mozilla.org/en-US/docs/Web/CSS/max-height