keiji/html/css/bootstrap-5.0.2/site/content/docs/5.0/utilities/sizing.md

---

layout: docs title: Sizing description: Easily make an element as wide or as tall with our width and height utilities. group: utilities

toc: true

Relative to the parent

Width and height utilities are generated from the utility API in _utilities.scss. Includes support for 25%, 50%, 75%, 100%, and auto by default. Modify those values as you need to generate different utilities here.

{{< example >}}

Width 25%

Width 50%

Width 75%

Width 100%

Width auto

{{< /example >}}

{{< example >}}

Height 25%

Height 50%

Height 75%

Height 100%

Height auto

{{< /example >}}

You can also use max-width: 100%; and max-height: 100%; utilities as needed.

{{< example >}} {{< placeholder width="100%" height="100" class="mw-100" text="Max-width 100%" >}} {{< /example >}}

{{< example >}}

Max-height 100%

{{< /example >}}

Relative to the viewport

You can also use utilities to set the width and height relative to the viewport.

<div class="min-vw-100">Min-width 100vw</div>
<div class="min-vh-100">Min-height 100vh</div>
<div class="vw-100">Width 100vw</div>
<div class="vh-100">Height 100vh</div>

Sass

Utilities API

Sizing utilities are declared in our utilities API in scss/_utilities.scss. Learn how to use the utilities API.

{{< scss-docs name="utils-sizing" file="scss/_utilities.scss" >}}