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maxWidth style property

Browser support:
Specifies or returns the maximum width for the visible area of an element.
This property has effect only on block-level elements or on elements with absolute or fixed position. The maxWidth property contains only the pure width of the visible content, without the padding, scrollbar, border and the margin.
The width of an element can never be greater than the value specified by the maxWidth property.
Note that this property works in Internet Explorer only from version 7.
You can specify a range for the size of an element with the minWidth, minHeight, maxWidth and maxHeight properties. If you want to specify the exact size of an element, use the width and height properties.
The properties mentioned above can be used to access style settings. If you need the width of a rendered element, you can use the clientWidth, offsetWidth and scrollWidth properties or the getBoundingClientRect method.


You can find the related objects in the Supported by objects section below.
This property is read/write.
CSS page for this property: max-width

Possible values:

The type of this property is string.
 One of the following values: 
Takes the value of this property from the computed style of the parent element.
No limit on the width of the element.
width in non-negative length
The maximum width for the element in length units. For the supported length units, see the length page.
width in non-negative percentage
The maximum width for the element is the specified percentage of the width of the parent element.
Default: none.

Example HTML code 1:

This example illustrates the use of the max-width property:
        .withMax {
            max-width: 50px;
            width: 100px;
            background: red;

        .withouMax {
            width: 100px;
            background: red;
    <p class="withMax">
        width: 100px and max-width: 50px. As a result, it should be 50 pixels wide.
    <p class="withouMax">
        width: 100px. As a result, it should be 100 pixels wide.
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Example HTML code 2:

This example illustrates the use of the maxWidth property in JavaScript:
    <script type="text/javascript">
        function ChangeMaxWidth () {
            var pObj = document.getElementById ("myP");
            var input = document.getElementById ("myInput");

   = input.value + "px";
    <p id="myP" style="width: 380px;background: #33CCFF;">Sample element with width: 380px</p>

    <input id="myInput" type="text" value="40" />
    <br />
    <button onclick="ChangeMaxWidth ();">Change the maxWidth of the element!</button>
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Supported by objects:

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