layout: docs title: Flex description: Quickly manage the layout, alignment, and sizing of grid columns, navigation, components, and more with a full suite of responsive flexbox utilities. For more complex implementations, custom CSS may be necessary. group: utilities
Apply display
utilities to create a flexbox container and transform direct children elements into flex items. Flex containers and items are able to be modified further with additional flex properties.
{{< example >}}
{{< example >}}
Responsive variations also exist for .d-flex
and .d-inline-flex
.
{{< markdown >}} {{< flex.inline >}} {{- range $.Site.Data.breakpoints }}
.d{{ .abbr }}-flex
.d{{ .abbr }}-inline-flex
{{- end -}}
{{< /flex.inline >}}
{{< /markdown >}}Set the direction of flex items in a flex container with direction utilities. In most cases you can omit the horizontal class here as the browser default is row
. However, you may encounter situations where you needed to explicitly set this value (like responsive layouts).
Use .flex-row
to set a horizontal direction (the browser default), or .flex-row-reverse
to start the horizontal direction from the opposite side.
{{< example >}}
Use .flex-column
to set a vertical direction, or .flex-column-reverse
to start the vertical direction from the opposite side.
{{< example >}}
Responsive variations also exist for flex-direction
.
{{< markdown >}} {{< flex.inline >}} {{- range $.Site.Data.breakpoints }}
.flex{{ .abbr }}-row
.flex{{ .abbr }}-row-reverse
.flex{{ .abbr }}-column
.flex{{ .abbr }}-column-reverse
{{- end -}}
{{< /flex.inline >}}
{{< /markdown >}}Use justify-content
utilities on flexbox containers to change the alignment of flex items on the main axis (the x-axis to start, y-axis if flex-direction: column
). Choose from start
(browser default), end
, center
, between
, around
, or evenly
.
<div class="d-flex justify-content-start">...</div>
<div class="d-flex justify-content-end">...</div>
<div class="d-flex justify-content-center">...</div>
<div class="d-flex justify-content-between">...</div>
<div class="d-flex justify-content-around">...</div>
<div class="d-flex justify-content-evenly">...</div>
Responsive variations also exist for justify-content
.
{{< markdown >}} {{< flex.inline >}} {{- range $.Site.Data.breakpoints }}
.justify-content{{ .abbr }}-start
.justify-content{{ .abbr }}-end
.justify-content{{ .abbr }}-center
.justify-content{{ .abbr }}-between
.justify-content{{ .abbr }}-around
.justify-content{{ .abbr }}-evenly
{{- end -}}
{{< /flex.inline >}}
{{< /markdown >}}Use align-items
utilities on flexbox containers to change the alignment of flex items on the cross axis (the y-axis to start, x-axis if flex-direction: column
). Choose from start
, end
, center
, baseline
, or stretch
(browser default).
<div class="d-flex align-items-start">...</div>
<div class="d-flex align-items-end">...</div>
<div class="d-flex align-items-center">...</div>
<div class="d-flex align-items-baseline">...</div>
<div class="d-flex align-items-stretch">...</div>
Responsive variations also exist for align-items
.
{{< markdown >}} {{< flex.inline >}} {{- range $.Site.Data.breakpoints }}
.align-items{{ .abbr }}-start
.align-items{{ .abbr }}-end
.align-items{{ .abbr }}-center
.align-items{{ .abbr }}-baseline
.align-items{{ .abbr }}-stretch
{{- end -}}
{{< /flex.inline >}}
{{< /markdown >}}Use align-self
utilities on flexbox items to individually change their alignment on the cross axis (the y-axis to start, x-axis if flex-direction: column
). Choose from the same options as align-items
: start
, end
, center
, baseline
, or stretch
(browser default).
<div class="align-self-start">Aligned flex item</div>
<div class="align-self-end">Aligned flex item</div>
<div class="align-self-center">Aligned flex item</div>
<div class="align-self-baseline">Aligned flex item</div>
<div class="align-self-stretch">Aligned flex item</div>
Responsive variations also exist for align-self
.
{{< markdown >}} {{< flex.inline >}} {{- range $.Site.Data.breakpoints }}
.align-self{{ .abbr }}-start
.align-self{{ .abbr }}-end
.align-self{{ .abbr }}-center
.align-self{{ .abbr }}-baseline
.align-self{{ .abbr }}-stretch
{{- end -}}
{{< /flex.inline >}}
{{< /markdown >}}Use the .flex-fill
class on a series of sibling elements to force them into widths equal to their content (or equal widths if their content does not surpass their border-boxes) while taking up all available horizontal space.
{{< example >}}
Responsive variations also exist for flex-fill
.
{{< markdown >}} {{< flex.inline >}} {{- range $.Site.Data.breakpoints }}
.flex{{ .abbr }}-fill
{{- end -}}
{{< /flex.inline >}}
{{< /markdown >}}Use .flex-grow-*
utilities to toggle a flex item's ability to grow to fill available space. In the example below, the .flex-grow-1
elements uses all available space it can, while allowing the remaining two flex items their necessary space.
{{< example >}}
Use .flex-shrink-*
utilities to toggle a flex item's ability to shrink if necessary. In the example below, the second flex item with .flex-shrink-1
is forced to wrap its contents to a new line, "shrinking" to allow more space for the previous flex item with .w-100
.
{{< example >}}
Responsive variations also exist for flex-grow
and flex-shrink
.
{{< markdown >}} {{< flex.inline >}} {{- range $.Site.Data.breakpoints }}
.flex{{ .abbr }}-{grow|shrink}-0
.flex{{ .abbr }}-{grow|shrink}-1
{{- end -}}
{{< /flex.inline >}}
{{< /markdown >}}Flexbox can do some pretty awesome things when you mix flex alignments with auto margins. Shown below are three examples of controlling flex items via auto margins: default (no auto margin), pushing two items to the right (.me-auto
), and pushing two items to the left (.ms-auto
).
{{< example >}}
<div class="d-flex flex-nowrap">
...
</div>
<div class="d-flex flex-wrap">
...
</div>
<div class="d-flex flex-wrap-reverse">
...
</div>
Responsive variations also exist for flex-wrap
.
{{< markdown >}} {{< flex.inline >}} {{- range $.Site.Data.breakpoints }}
.flex{{ .abbr }}-nowrap
.flex{{ .abbr }}-wrap
.flex{{ .abbr }}-wrap-reverse
{{- end -}}
{{< /flex.inline >}}
{{< /markdown >}}Change the visual order of specific flex items with a handful of order
utilities. We only provide options for making an item first or last, as well as a reset to use the DOM order. As order
takes any integer value from 0 to 5, add custom CSS for any additional values needed.
{{< example >}}
Responsive variations also exist for order
.
{{< markdown >}} {{< flex.inline >}} {{- range $bp := $.Site.Data.breakpoints -}} {{- range (seq 0 5) }}
.order{{ $bp.abbr }}-{{ . }}
{{- end -}}
{{- end -}}
{{< /flex.inline >}}
{{< /markdown >}}Additionally there are also responsive .order-first
and .order-last
classes that change the order
of an element by applying order: -1
and order: 6
, respectively.
{{< markdown >}} {{< flex.inline >}} {{- range $bp := $.Site.Data.breakpoints -}} {{- range (slice "first" "last") }}
.order{{ $bp.abbr }}-{{ . }}
{{- end -}}
{{- end -}}
{{< /flex.inline >}}
{{< /markdown >}}Use align-content
utilities on flexbox containers to align flex items together on the cross axis. Choose from start
(browser default), end
, center
, between
, around
, or stretch
. To demonstrate these utilities, we've enforced flex-wrap: wrap
and increased the number of flex items.
Heads up! This property has no effect on single rows of flex items.
<div class="d-flex align-content-start flex-wrap">
...
</div>
<div class="d-flex align-content-end flex-wrap">...</div>
<div class="d-flex align-content-center flex-wrap">...</div>
<div class="d-flex align-content-between flex-wrap">...</div>
<div class="d-flex align-content-around flex-wrap">...</div>
<div class="d-flex align-content-stretch flex-wrap">...</div>
Responsive variations also exist for align-content
.
{{< markdown >}} {{< flex.inline >}} {{- range $.Site.Data.breakpoints }}
.align-content{{ .abbr }}-start
.align-content{{ .abbr }}-end
.align-content{{ .abbr }}-center
.align-content{{ .abbr }}-around
.align-content{{ .abbr }}-stretch
{{- end -}}
{{< /flex.inline >}}
{{< /markdown >}}Looking to replicate the media object component from Bootstrap 4? Recreate it in no time with a few flex utilities that allow even more flexibility and customization than before.
{{< example >}}
{{< placeholder width="100" height="100" color="#999" background="#e5e5e5" text="Image" >}}
This is some content from a media component. You can replace this with any content and adjust it as needed.
And say you want to vertically center the content next to the image:
{{< example >}}
{{< placeholder width="100" height="100" color="#999" background="#e5e5e5" text="Image" >}}
This is some content from a media component. You can replace this with any content and adjust it as needed.
Flexbox utilities are declared in our utilities API in scss/_utilities.scss
. Learn how to use the utilities API.
{{< scss-docs name="utils-flex" file="scss/_utilities.scss" >}}