Flex
Quickly manage the layout, alignment, and sizing of grid columns, navigation, components, and more with a full suite of responsive flexbox utilities.
Flex enable
To create flexbox container and transform direct children elements into flex items add .d-flex or .d-inline-flex class to element. Flex containers and items are able to be modified further with additional flex properties.
<div class="d-flex p-2">I am a flexbox container!</div>
<div class="d-inline-flex p-2">I am a inline flexbox container!</div>
Responsive variations also exist for .d-flex and .d-inline-flex as .d-flex-* and .d-inline-flex-*. You can change asterisk to sm, md, lg, xl or xxl.
Direction
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-r to start the horizontal direction from the opposite side.
<div class="d-flex flex-row">
<div class="p-2 bg-lightCyan">Flex item 1</div>
<div class="p-2 bg-cyan">Flex item 2</div>
<div class="p-2 bg-darkCyan">Flex item 3</div>
</div>
<div class="d-flex flex-row-r">
<div class="p-2 bg-lightCyan">Flex item 1</div>
<div class="p-2 bg-cyan">Flex item 2</div>
<div class="p-2 bg-darkCyan">Flex item 3</div>
</div>
Use .flex-column to set a vertical direction, or .flex-column-r to start the vertical direction from the opposite side.
<div class="d-flex flex-column">
<div class="p-2 bg-lightCyan">Flex item 1</div>
<div class="p-2 bg-cyan">Flex item 2</div>
<div class="p-2 bg-darkCyan">Flex item 3</div>
</div>
<div class="d-flex flex-column-r">
<div class="p-2 bg-lightCyan">Flex item 1</div>
<div class="p-2 bg-cyan">Flex item 2</div>
<div class="p-2 bg-darkCyan">Flex item 3</div>
</div>
Justify content
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, or around.
<div class="d-flex flex-justify-start">...</div>
<div class="d-flex flex-justify-end">...</div>
<div class="d-flex flex-justify-center">...</div>
<div class="d-flex flex-justify-between">...</div>
<div class="d-flex flex-justify-around">...</div>
Align items
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 flex-align-start">...</div>
<div class="d-flex flex-align-end">...</div>
<div class="d-flex flex-align-center">...</div>
<div class="d-flex flex-align-baseline">...</div>
<div class="d-flex flex-align-stretch">...</div>
Align self
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="d-flex">
<div class="flex-self-start">...</div>
<div class="flex-self-end">...</div>
<div class="flex-self-center">...</div>
<div class="flex-self-baseline">...</div>
<div class="flex-self-stretch">...</div>
</div>
Align content
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.
This property has no effect on single rows of flex items.
<div class="d-flex flex-content-start flex-wrap">...</div>
<div class="d-flex flex-content-end flex-wrap">...</div>
<div class="d-flex flex-content-center flex-wrap">...</div>
<div class="d-flex flex-content-between flex-wrap">...</div>
<div class="d-flex flex-content-around flex-wrap">...</div>
<div class="d-flex flex-content-stretch flex-wrap">...</div>
Auto margins
Flexbox can do some pretty awesome things when you mix flex alignments with auto margins.
.flex-justify-content
Easily move all flex items to one side, but keep another on the opposite end by mixing justify-content with margin-right: auto or margin-left: auto.
<div class="d-flex flex-justify-end">
<div class="mr-auto">Flex item</div>
<div>Flex item</div>
<div>Flex item</div>
</div>
<div class="d-flex flex-justify-start">
<div>Flex item</div>
<div>Flex item</div>
<div class="ml-auto">Flex item</div>
</div>
.flex-align-items
Similarly, move one flex item to the top or bottom of a container by mixing align-items, flex-direction: column, and margin-top: auto or margin-bottom: auto.
Wrap
Change how flex items wrap in a flex container.
Choose from no wrapping at all (the browser default) with .flex-nowrap, wrapping with .flex-wrap, or reverse wrapping with .flex-wrap-r.
<div class="d-flex flex-nowrap">...</div>
<div class="d-flex flex-wrap">...</div>
<div class="d-flex flex-wrap-r">...</div>
Order
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 (e.g., 5), add custom CSS for any additional values needed.
<div class="d-flex flex-nowrap">
<div class="order-3">First flex item</div>
<div class="order-2">Second flex item</div>
<div class="order-1">Third flex item</div>
</div>
Responsive
All flex utilities classes has media variants with breakpoints suffixes:
-sm,
-md,
-lg,
-xl,
-xxl.