flexbox.md

---
layout: docs
title: Flexbox
group: utilities
---

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.

## Contents

* Will be replaced with the ToC, excluding the "Contents" header
{:toc}

## Enable flex behaviors

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 html %}
<div class="d-flex p-2 bd-highlight">I'm a flexbox container!</div>
{% endexample %}

{% example html %}
<div class="d-inline-flex p-2 bd-highlight">I'm an inline flexbox container!</div>
{% endexample %}

Responsive variations also exist for `.d-flex` and `.d-inline-flex`.

{% for bp in site.data.breakpoints %}
- `.d{{ bp.abbr }}-flex`
- `.d{{ bp.abbr }}-inline-flex`{% endfor %}

## 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.

{% example html %}
<div class="d-flex flex-row bd-highlight">
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
</div>
{% endexample %}

Use `.flex-column` to set a vertical direction.

{% example html %}
<div class="d-flex flex-column bd-highlight">
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
</div>
{% endexample %}

Responsive variations also exist for `.flex-row` and `.flex-column`.

{% for bp in site.data.breakpoints %}
- `.flex{{ bp.abbr }}-row`
- `.flex{{ bp.abbr }}-column`{% endfor %}

## Wrap

Change how flex items wrap in a flex container. Choose from no wrapping at all (the browser default) with `.flex-nowrap`, or enable wrapping with `.flex-wrap`.

{% example html %}
<div class="d-flex flex-nowrap bd-highlight">
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
</div>
{% endexample %}

{% example html %}
<div class="d-flex flex-wrap bd-highlight">
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
  <div class="p-2 bd-highlight">Flex item</div>
</div>
{% endexample %}

Responsive variations also exist for `.flex-nowrap` and `.flex-wrap`.

{% for bp in site.data.breakpoints %}
- `.flex{{ bp.abbr }}-nowrap`
- `.flex{{ bp.abbr }}-wrap`{% endfor %}

## 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="bd-example">
  <div class="d-flex justify-content-start bd-highlight mb-3">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
  <div class="d-flex justify-content-end bd-highlight mb-3">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
  <div class="d-flex justify-content-center bd-highlight mb-3">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
  <div class="d-flex justify-content-between bd-highlight mb-3">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
  <div class="d-flex justify-content-around bd-highlight">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
</div>

{% highlight html %}
<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>
{% endhighlight %}

## 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="bd-example">
  <div class="d-flex align-items-start bd-highlight mb-3" style="height: 100px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
  <div class="d-flex align-items-end bd-highlight mb-3" style="height: 100px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
  <div class="d-flex align-items-center bd-highlight mb-3" style="height: 100px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
  <div class="d-flex align-items-baseline bd-highlight mb-3" style="height: 100px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
  <div class="d-flex align-items-stretch bd-highlight" style="height: 100px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
</div>

{% highlight html %}
<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>
{% endhighlight %}

## 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="bd-example">
  <div class="d-flex bd-highlight mb-3" style="height: 100px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="align-self-start p-2 bd-highlight">Aligned flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
  <div class="d-flex bd-highlight mb-3" style="height: 100px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="align-self-end p-2 bd-highlight">Aligned flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
  <div class="d-flex bd-highlight mb-3" style="height: 100px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="align-self-center p-2 bd-highlight">Aligned flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
  <div class="d-flex bd-highlight mb-3" style="height: 100px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="align-self-baseline p-2 bd-highlight">Aligned flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
  <div class="d-flex bd-highlight" style="height: 100px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="align-self-stretch p-2 bd-highlight">Aligned flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
</div>

{% highlight html %}
<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>
{% endhighlight %}

## 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.

**Heads up!** This property has no affect on single rows of flex items.

<div class="bd-example">
  <div class="d-flex align-content-start flex-wrap bd-highlight mb-3" style="height: 200px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
</div>
{% highlight html %}
<div class="d-flex align-content-start flex-wrap">
  ...
</div>
{% endhighlight %}

<div class="bd-example">
  <div class="d-flex align-content-end flex-wrap bd-highlight mb-3" style="height: 200px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
</div>
{% highlight html %}
<div class="d-flex align-content-end flex-wrap">...</div>
{% endhighlight %}

<div class="bd-example">
  <div class="d-flex align-content-center flex-wrap bd-highlight mb-3" style="height: 200px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
</div>
{% highlight html %}
<div class="d-flex align-content-center flex-wrap">...</div>
{% endhighlight %}

<div class="bd-example">
  <div class="d-flex align-content-between flex-wrap bd-highlight mb-3" style="height: 200px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
</div>
{% highlight html %}
<div class="d-flex align-content-between flex-wrap">...</div>
{% endhighlight %}

<div class="bd-example">
  <div class="d-flex align-content-around flex-wrap bd-highlight mb-3" style="height: 200px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
</div>
{% highlight html %}
<div class="d-flex align-content-around flex-wrap">...</div>
{% endhighlight %}

<div class="bd-example">
  <div class="d-flex align-content-stretch flex-wrap bd-highlight mb-3" style="height: 200px">
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
    <div class="p-2 bd-highlight">Flex item</div>
  </div>
</div>
{% highlight html %}
<div class="d-flex align-content-stretch flex-wrap">...</div>
{% endhighlight %}