Hướng dẫn align-items bootstrap

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.

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.

I'm a flexbox container!

I'm an inline flexbox container!

I'm an inline flexbox container!

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

.d-flex
.d-inline-flex
.d-sm-flex
.d-sm-inline-flex
.d-md-flex
.d-md-inline-flex
.d-lg-flex
.d-lg-inline-flex
.d-xl-flex
.d-xl-inline-flex

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-reverse to start the horizontal direction from the opposite side.

Flex item 1

Flex item 2

Flex item 3

Flex item 1

Flex item 2

Flex item 3


  Flex item 1
  Flex item 2
  Flex item 3


  Flex item 1
  Flex item 2
  Flex item 3

Use .flex-column to set a vertical direction, or .flex-column-reverse to start the vertical direction from the opposite side.

Flex item 1

Flex item 2

Flex item 3

Flex item 1

Flex item 2

Flex item 3


  Flex item 1
  Flex item 2
  Flex item 3


  Flex item 1
  Flex item 2
  Flex item 3

Responsive variations also exist for flex-direction.

.flex-row
.flex-row-reverse
.flex-column
.flex-column-reverse
.flex-sm-row
.flex-sm-row-reverse
.flex-sm-column
.flex-sm-column-reverse
.flex-md-row
.flex-md-row-reverse
.flex-md-column
.flex-md-column-reverse
.flex-lg-row
.flex-lg-row-reverse
.flex-lg-column
.flex-lg-column-reverse
.flex-xl-row
.flex-xl-row-reverse
.flex-xl-column
.flex-xl-column-reverse

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.

Flex item

...
...
...
...
...

Responsive variations also exist for justify-content.

.justify-content-start
.justify-content-end
.justify-content-center
.justify-content-between
.justify-content-around
.justify-content-sm-start
.justify-content-sm-end
.justify-content-sm-center
.justify-content-sm-between
.justify-content-sm-around
.justify-content-md-start
.justify-content-md-end
.justify-content-md-center
.justify-content-md-between
.justify-content-md-around
.justify-content-lg-start
.justify-content-lg-end
.justify-content-lg-center
.justify-content-lg-between
.justify-content-lg-around
.justify-content-xl-start
.justify-content-xl-end
.justify-content-xl-center
.justify-content-xl-between
.justify-content-xl-around

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].

Flex item

...
...
...
...
...

Responsive variations also exist for align-items.

.align-items-start
.align-items-end
.align-items-center
.align-items-baseline
.align-items-stretch
.align-items-sm-start
.align-items-sm-end
.align-items-sm-center
.align-items-sm-baseline
.align-items-sm-stretch
.align-items-md-start
.align-items-md-end
.align-items-md-center
.align-items-md-baseline
.align-items-md-stretch
.align-items-lg-start
.align-items-lg-end
.align-items-lg-center
.align-items-lg-baseline
.align-items-lg-stretch
.align-items-xl-start
.align-items-xl-end
.align-items-xl-center
.align-items-xl-baseline
.align-items-xl-stretch

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].

Flex item

Aligned flex item

Flex item

Aligned flex item

Flex item

Aligned flex item

Flex item

Aligned flex item

Flex item

Aligned flex item

Flex item

Aligned flex item
Aligned flex item
Aligned flex item
Aligned flex item
Aligned flex item

Responsive variations also exist for align-self.

.align-self-start
.align-self-end
.align-self-center
.align-self-baseline
.align-self-stretch
.align-self-sm-start
.align-self-sm-end
.align-self-sm-center
.align-self-sm-baseline
.align-self-sm-stretch
.align-self-md-start
.align-self-md-end
.align-self-md-center
.align-self-md-baseline
.align-self-md-stretch
.align-self-lg-start
.align-self-lg-end
.align-self-lg-center
.align-self-lg-baseline
.align-self-lg-stretch
.align-self-xl-start
.align-self-xl-end
.align-self-xl-center
.align-self-xl-baseline
.align-self-xl-stretch

Auto margins

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 [.mr-auto], and pushing two items to the left [.ml-auto].

Unfortunately, IE10 and IE11 do not properly support auto margins on flex items whose parent has a non-default justify-content value. See this StackOverflow answer for more details.

Flex item


  Flex item
  Flex item
  Flex item



  Flex item
  Flex item
  Flex item



  Flex item
  Flex item
  Flex item

With align-items

Vertically 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.

Flex item


  Flex item
  Flex item
  Flex item



  Flex item
  Flex item
  Flex item

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-reverse.

Flex item

...

Flex item

...

Flex item

...

Responsive variations also exist for flex-wrap.

.flex-nowrap
.flex-wrap
.flex-wrap-reverse
.flex-sm-nowrap
.flex-sm-wrap
.flex-sm-wrap-reverse
.flex-md-nowrap
.flex-md-wrap
.flex-md-wrap-reverse
.flex-lg-nowrap
.flex-lg-wrap
.flex-lg-wrap-reverse
.flex-xl-nowrap
.flex-xl-wrap
.flex-xl-wrap-reverse

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.

First flex item

Second flex item

Third flex item


  First flex item
  Second flex item
  Third flex item

Responsive variations also exist for order.

.order-0
.order-1
.order-2
.order-3
.order-4
.order-5
.order-6
.order-7
.order-8
.order-9
.order-10
.order-11
.order-12
.order-sm-0
.order-sm-1
.order-sm-2
.order-sm-3
.order-sm-4
.order-sm-5
.order-sm-6
.order-sm-7
.order-sm-8
.order-sm-9
.order-sm-10
.order-sm-11
.order-sm-12
.order-md-0
.order-md-1
.order-md-2
.order-md-3
.order-md-4
.order-md-5
.order-md-6
.order-md-7
.order-md-8
.order-md-9
.order-md-10
.order-md-11
.order-md-12
.order-lg-0
.order-lg-1
.order-lg-2
.order-lg-3
.order-lg-4
.order-lg-5
.order-lg-6
.order-lg-7
.order-lg-8
.order-lg-9
.order-lg-10
.order-lg-11
.order-lg-12
.order-xl-0
.order-xl-1
.order-xl-2
.order-xl-3
.order-xl-4
.order-xl-5
.order-xl-6
.order-xl-7
.order-xl-8
.order-xl-9
.order-xl-10
.order-xl-11
.order-xl-12

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 effect on single rows of flex items.

Flex item

...

Flex item

...

Flex item

...

Flex item

...

Flex item

...

Flex item

...

Responsive variations also exist for align-content.

.align-content-start
.align-content-end
.align-content-center
.align-content-around
.align-content-stretch
.align-content-sm-start
.align-content-sm-end
.align-content-sm-center
.align-content-sm-around
.align-content-sm-stretch
.align-content-md-start
.align-content-md-end
.align-content-md-center
.align-content-md-around
.align-content-md-stretch
.align-content-lg-start
.align-content-lg-end
.align-content-lg-center
.align-content-lg-around
.align-content-lg-stretch
.align-content-xl-start
.align-content-xl-end
.align-content-xl-center
.align-content-xl-around
.align-content-xl-stretch

Enable flex behaviors

Direction

Justify content

Align items

Align self

Auto margins

With align-items

Wrap

Order

Align content

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