max-width
Quick Summary for max-width
max-width CSS property sets the maximum width of an element. It prevents the used value of the width property from becoming larger than the value specified by max-width.
Code Usage for max-width
/* <length> value */ max-width: 3.5em; /* <percentage> value */ max-width: 75%; /* Keyword values */ max-width: none; max-width: max-content; max-width: min-content; max-width: fit-content(20em); /* Global values */ max-width: inherit; max-width: initial; max-width: revert; max-width: unset; More Details for max-width
max-width
The max-width CSS property sets the maximum width of an element. It prevents the used value of the width property from becoming larger than the value specified by max-width.
max-width overrides width, but min-width overrides max-width.
Syntax
/* <length> value */ max-width: 3.5em; /* <percentage> value */ max-width: 75%; /* Keyword values */ max-width: none; max-width: max-content; max-width: min-content; max-width: fit-content(20em); /* Global values */ max-width: inherit; max-width: initial; max-width: revert; max-width: unset; Values
<length> Defines the max-width as an absolute value.
<percentage> Defines the max-width as a percentage of the containing block's width.
none No limit on the size of the box.
max-content The intrinsic preferred max-width.
min-content The intrinsic minimum max-width.
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-width 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 rows, and row groups |
| Inherited | no |
| Percentages | refer to the width of the containing block |
| Computed value | the percentage as specified or the absolute length or none |
| Animation type | a length, percentage or calc(); |
Formal syntax
none | <length-percentage> | min-content | max-content | fit-content | fit-content(<length-percentage>)where
<length-percentage> = <length> | <percentage>
Examples
Setting max width in pixels
In this example, the "child" will be either 150 pixels wide or the width of the "parent," whichever is smaller.
HTML<div id="parent"> <div id="child"> Fusce pulvinar vestibulum eros, sed luctus ex lobortis quis. </div> </div> #parent { background: lightblue; width: 300px; } #child { background: gold; width: 100%; max-width: 150px; } Specifications
| Specification |
|---|
| CSS Box Sizing Module Level 4 # width-height-keywords |
See also
The box model,box-sizing width, min-width The mapped logical properties: max-inline-size, max-block-size Last modified: Aug 12, 2021, by MDN contributors
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