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min-width

files/en-us/web/css/reference/properties/min-width/index.md

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The min-width CSS property sets the minimum width of an element. It prevents the used value of the {{cssxref("width")}} property from becoming smaller than the value specified for min-width.

{{InteractiveExample("CSS Demo: min-width")}}

css
min-width: 150px;
css
min-width: 20em;
css
min-width: 75%;
css
min-width: 40ch;
html
<section class="default-example" id="default-example">
  <div class="transition-all" id="example-element">
    Change the minimum width.
  </div>
</section>
css
#example-element {
  display: flex;
  flex-direction: column;
  background-color: #5b6dcd;
  height: 80%;
  justify-content: center;
  color: white;
}

The element's width is set to the value of min-width whenever min-width is larger than {{Cssxref("max-width")}} or {{Cssxref("width")}}.

Syntax

css
/* <length> value */
min-width: 3.5em;
min-width: anchor-size(width);
min-width: anchor-size(--my-anchor self-inline, 200%);

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

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

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

Values

  • {{cssxref("<length>")}}

    • : Defines the min-width as an absolute value.

  • {{cssxref("<percentage>")}}

    • : Defines the min-width as a percentage of the containing block's width.

  • auto

    • : The default value. The source of the automatic value for the specified element depends on its display value. For block boxes, inline boxes, inline blocks, and all table layout boxes auto resolves to 0.

      For flex items and grid items, the minimum width value is either the specified suggested size, such as the value of the width property, the transferred size, calculated if the element has an aspect-ratio set and the height is a definite size, otherwise, the min-content size is used. If the flex or grid item is a {{glossary("scroll container")}}, or if a grid item spans more than one flexible column track, the automatic minimum size is 0.

  • {{cssxref("max-content")}}

    • : The intrinsic preferred min-width.

  • {{cssxref("min-content")}}

    • : The intrinsic minimum min-width.

  • {{cssxref("fit-content")}}

    • : Use the available space, but not more than {{cssxref("max-content")}}, i.e., min(max-content, max(min-content, stretch)).

  • 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)).

  • stretch

    • : Limits the minimum width of the element's margin box to the width of its containing block. It attempts to make the margin box fill the available space in the containing block, so in a way behaving similar to 100% but applying the resulting size to the margin box rather than the box determined by box-sizing.

      [!NOTE] To check aliases used by browsers for the stretch value and its implementation status, see the Browser compatibility section.

Formal definition

{{cssinfo}}

Formal syntax

{{csssyntax}}

Examples

Setting minimum element width

css
table {
  min-width: 75%;
}

form {
  min-width: 0;
}

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also