The min-height CSS property sets the minimum height of an element. It prevents the used value of the height property from becoming smaller than the value specified for min-height.

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The element's height is set to the value of min-height whenever min-height is larger than max-height or height.


/* <length> value */
min-height: 3.5em;
min-height: anchor-size(height);
min-height: anchor-size(--myAnchor block, 200px);

/* <percentage> value */
min-height: 10%;

/* Keyword values */
min-height: max-content;
min-height: min-content;
min-height: fit-content;
min-height: fit-content(20em);

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



Defines the min-height as an absolute value.


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


The browser will calculate and select a min-height for the specified element.


The intrinsic preferred min-height.


The intrinsic minimum min-height.


Use the available space, but not more than max-content, i.e min(max-content, max(min-content, stretch)).


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

Formal definition

Initial valueauto
Applies toall elements but non-replaced inline elements, table columns, and column groups
PercentagesThe 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.
Computed valuethe percentage as specified or the absolute length
Animation typea length, percentage or calc();

Formal syntax

min-height = 
auto |
<length-percentage [0,∞]> |
min-content |
max-content |
fit-content( <length-percentage [0,∞]> )

<length-percentage> =
<length> |


Setting min-height

table {
  min-height: 75%;

form {
  min-height: 0;


CSS Box Sizing Module Level 3
# width-height-keywords
CSS Box Sizing Module Level 4
# sizing-values

Browser compatibility

BCD tables only load in the browser

See also