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max-width · WebPlatform Docs
max-width Summary
Sets the maximum width for an element. It limits the width property to be larger than the value specified in max-width.
Overview table
-
Initial value
-
none
-
Applies to
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all elements but non-replaced inline elements, tables, inline tables, table cells, table columns, and column groups
-
Inherited
-
No
-
Media
-
visual
-
Computed value
-
the percentage as specified or the absolute length or ‘none’
-
Animatable
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Yes
-
CSS Object Model Property
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max-width
-
Percentages
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refer to width of containing block
Syntax
max-width: calc()
max-width: fill-available
max-width: fit-content
max-width: inherit
max-width: length
max-width: max-content
max-width: min-content
max-width: none
max-width: percentage
Values
-
length
-
Specifies a fixed width. Negative values are not allowed. See length for possible units.
-
percentage
-
A <percentage> relative to the width of the containing block. If the containing block has no width explicitly set then is is treated as none. Negative values are not allowed.
-
calc()
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See css calc function for mode details.
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inherit
-
Takes the same specified value as the property for the element’s parent.
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none
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Default. Clears the max-width value. The width property can have any value.
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max-content
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The narrowest space a box could take while fitting around its contents if none of the soft wrap opportunities within the box were taken.(Space/Punctuation in text are examples of a soft-wrap opportunity). Requires CSS Intrinsic & Extrinsic Sizing Module support in browsers.
-
min-content
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The narrowest measure a box could take that doesn’t lead to inline-dimension overflow that could be avoided by choosing a larger measure. Roughly, the measure that would fit around its contents if all soft wrap opportunities within the box were taken. Requires CSS Intrinsic & Extrinsic Sizing Module support in browsers.
-
fill-available
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Fill the entire available space of from the containing block (Width minus vertical margin, border and padding of the containing block). Requires CSS Intrinsic & Extrinsic Sizing Module support in browsers.
-
fit-content
-
If the total available space is finite, equals to min(max-content, max(min-content, fill-available)). Otherwise, equal to the max-content measure. Requires CSS Intrinsic & Extrinsic Sizing Module support in browsers.
Examples
Use max-width with any CSS selector to apply it.
div { max-width: 100px }
Constrain the width of a div element using min-width and max-width attributes.
<style>
.width {
width:50%;
background:#eee;
}
.minwidth {
width: 50%;
min-width: 600px;
background: lightblue;
}
.maxwidth {
width: 50%;
max-width: 200px;
background: lightgreen
}
.content {
border:1px solid #c00;
padding:5px;
}
</style>
<h3>Resize the window to grow and shrink the div from max to min width.</h3>
<div class="width">
<p class="content">This div also has a width of 50%. <br/><br/>
Note that the div height increases to accommodate the flow of text.</p>
</div>
<div class="minwidth">
<p class="content">This div also has a width of 50%.<br /><br /> It also has a min-width of 600px.</p>
</div>
<div class="maxwidth">
<p class="content">This div also has a width of 50%.<br /><br /> It also has a max-width of 200px.</p>
</div>
View live example
Usage
CSS max width is well supported across most browsers. A few things to consider while usage:
- min-width overrides max-width. If min-width supplied is greater than max-width, max-width does not have an impact.
- max-content, min-content, fit-content, and fill-available are in W3C draft stage and not supported across all browsers.
- Support for calc is better across browsers. Vendor prefixes may be needed.
Notes Remarks
The min-width/max-width attributes apply to floating and absolutely positioned block and inline-block elements, as well as some intrinsic controls. They do not apply to non-replaced inline elements, such as table rows and row/column groups. (A “replaced” element has intrinsic dimensions, such as an img or textArea.) This property is enabled only under the strict !DOCTYPE.
Related specifications
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CSS 2.1 (Section 10.7)
-
W3C Recommendation
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CSS Intrinsic & Extrinsic Sizing Module Level 3
-
Working Draft
See also Related articles CSS Layout
Box Model
Related pages
Attributions
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