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.
Width 25%
Width 50%
Width 75%
Width 100%
Width auto
<div class="w-25 p-3">Width 25%</div>
<div class="w-50 p-3">Width 50%</div>
<div class="w-75 p-3">Width 75%</div>
<div class="w-100 p-3">Width 100%</div>
<div class="w-auto p-3">Width auto</div>Height 25%
Height 50%
Height 75%
Height 100%
Height auto
<div style="height: 100px;">
<div class="h-25 d-inline-block" style="width: 120px;">Height 25%</div>
<div class="h-50 d-inline-block" style="width: 120px;">Height 50%</div>
<div class="h-75 d-inline-block" style="width: 120px;">Height 75%</div>
<div class="h-100 d-inline-block" style="width: 120px;">Height 100%</div>
<div class="h-auto d-inline-block" style="width: 120px;">Height auto</div>
</div>You can also use max-width: 100%; and max-height: 100%; utilities as needed.
Max-width 100%
<div style="width: 50%; height: 100px;">
<div class="mw-100" style="width: 200%;">Max-width 100%</div>
</div>Max-height 100%
<div style="height: 100px;">
<div class="mh-100" style="width: 100px; height: 200px;">Max-height 100%</div>
</div>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>
CSS
Sass utilities API
Sizing utilities are declared in our utilities API in scss/_utilities.scss. Learn how to use the utilities API.
"width": (
property: width,
class: w,
values: (
25: 25%,
50: 50%,
75: 75%,
100: 100%,
auto: auto
)
),
"max-width": (
property: max-width,
class: mw,
values: (100: 100%)
),
"viewport-width": (
property: width,
class: vw,
values: (100: 100vw)
),
"min-viewport-width": (
property: min-width,
class: min-vw,
values: (100: 100vw)
),
"height": (
property: height,
class: h,
values: (
25: 25%,
50: 50%,
75: 75%,
100: 100%,
auto: auto
)
),
"max-height": (
property: max-height,
class: mh,
values: (100: 100%)
),
"viewport-height": (
property: height,
class: vh,
values: (100: 100vh)
),
"min-viewport-height": (
property: min-height,
class: min-vh,
values: (100: 100vh)
),