Web/CSS/align-self

The align-self CSS property overrides a grid or flex item's align-items value. In Grid, it aligns the item inside the grid area. In Flexbox, it aligns the item on the cross axis.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

The property doesn't apply to block-level boxes, or to table cells. If a flexbox item's cross-axis margin is auto, then align-self is ignored.

Syntax

/* Keyword values */ 
align-self: auto; 
align-self: normal; 

/* Positional alignment */ 
/* align-self does not take left and right values */
align-self: center; /* Put the item around the center */ 
align-self: start; /* Put the item at the start */ 
align-self: end; /* Put the item at the end */ 
align-self: self-start; /* Align the item flush at the start */ 
align-self: self-end; /* Align the item flush at the end */ 
align-self: flex-start; /* Put the flex item at the start */ 
align-self: flex-end; /* Put the flex item at the end */ 

/* Baseline alignment */ 
align-self: baseline; 
align-self: first baseline; 
align-self: last baseline; 
align-self: stretch; /* Stretch 'auto'-sized items to fit the container */ 

/* Overflow alignment */ 
align-self: safe center; 
align-self: unsafe center; 

/* Global values */ 
align-self: inherit; 
align-self: initial; 
align-self: unset;

Values

auto

Computes to the parent's align-items value.

normal

The effect of this keyword is dependent of the layout mode we are in:

• In absolutely-positioned layouts, the keyword behaves like start on replaced absolutely-positioned boxes, and as stretch on all other absolutely-positioned boxes.
• In static position of absolutely-positioned layouts, the keyword behaves as stretch.
• For flex items, the keyword behaves as stretch.
• For grid items, this keyword leads to a behavior similar to the one of stretch, except for boxes with an aspect ratio or an intrinsic sizes where it behaves like start.
• The property doesn't apply to block-level boxes, and to table cells.

self-start

Aligns the items to be flush with the edge of the alignment container corresponding to the item's start side in the cross axis.

self-end

Aligns the items to be flush with the edge of the alignment container corresponding to the item's end side in the cross axis.

flex-start

The cross-start margin edge of the flex item is flushed with the cross-start edge of the line.

flex-end

The cross-end margin edge of the flex item is flushed with the cross-end edge of the line.

center

The flex item's margin box is centered within the line on the cross-axis. If the cross-size of the item is larger than the flex container, it will overflow equally in both directions.

baseline first baseline last baseline

Specifies participation in first- or last-baseline alignment: aligns the alignment baseline of the box’s first or last baseline set with the corresponding baseline in the shared first or last baseline set of all the boxes in its baseline-sharing group. The fallback alignment for first baseline is start, the one for last baseline is end.

stretch

If the combined size of the items along the cross axis is less than the size of the alignment container and the item is auto-sized, its size is increased equally (not proportionally), while still respecting the constraints imposed by max-height/max-width (or equivalent functionality), so that the combined size of all auto-sized items exactly fills the alignment container along the cross axis.

safe

If the size of the item overflows the alignment container, the item is instead aligned as if the alignment mode were start.

unsafe

Regardless of the relative sizes of the item and alignment container, the given alignment value is honored.

Formal definition

Initial value	auto
Applies to	flex items, grid items, and absolutely-positioned boxes
Inherited	no
Computed value	auto computes to itself on absolutely-positioned elements, and to the computed value of align-items on the parent (minus any legacy keywords) on all other boxes, or start if the box has no parent. Its behavior depends on the layout model, as described for justify-self. Otherwise the specified value.
Animation type	discrete

Formal syntax

auto | normal | stretch | <baseline-position> | <overflow-position>? <self-position>where <baseline-position> = [ first | last ]? baseline<overflow-position> = unsafe | safe<self-position> = center | start | end | self-start | self-end | flex-start | flex-end

Examples

HTML

<section>
  <div>Item #1</div>
  <div>Item #2</div>
  <div>Item #3</div>
</section>

CSS

section {
  display: flex;
  align-items: center;
  height: 120px;
  background: beige;
}

div {
  height: 60px;
  background: cyan;
  margin: 5px;
}

div:nth-child(3) {
  align-self: flex-end;
  background: pink;
}

Specifications

Specification	Status	Comment
CSS Box Alignment Module Level 3The definition of 'align-self' in that specification.	Working Draft	Update to latest syntax definitions.
CSS Flexible Box Layout ModuleThe definition of 'align-self' in that specification.	Candidate Recommendation	Initial definition.

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Support in Flex layout

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
Supported in Flex Layout	Chrome Full support 36 Full support 36 Partial support 29 Notes' Notes' Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Chrome implements the new behavior beginning with Chrome 52. Full support 21 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	Edge Full support 12	Firefox Full support 20 Notes' Full support 20 Notes' Notes' Before Firefox 27, only single-line flexbox is supported. No support 18 — 20 Disabled' Disabled' From version 18 until version 20 (exclusive): this feature is behind the layout.css.flexbox.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config. Full support 49 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit- Full support 48 Prefixed' Disabled' Prefixed' Implemented with the vendor prefix: -webkit- Disabled' From version 48: this feature is behind the layout.css.prefixes.webkit preference (needs to be set to true). To change preferences in Firefox, visit about:config.	IE Full support 11	Opera Full support 12.1	Safari Full support 9 Full support 9 Full support 6.1 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	WebView Android Full support 37 Full support 37 Partial support 4.4 Notes' Notes' Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Chrome implements the new behavior beginning with Chrome 52. Full support ≤37 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	Chrome Android Full support 36 Full support 36 Partial support 29 Notes' Notes' Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Chrome implements the new behavior beginning with Chrome 52. Full support 25 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	Firefox Android Full support 20 Notes' Full support 20 Notes' Notes' Before Firefox 27, only single-line flexbox is supported. No support 18 — 20 Disabled' Disabled' From version 18 until version 20 (exclusive): this feature is behind the layout.css.flexbox.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config. Full support 49 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit- Full support 48 Prefixed' Disabled' Prefixed' Implemented with the vendor prefix: -webkit- Disabled' From version 48: this feature is behind the layout.css.prefixes.webkit preference (needs to be set to true). To change preferences in Firefox, visit about:config.	Opera Android Full support 12.1	Safari iOS Full support 9 Full support 9 Full support 6.1 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	Samsung Internet Android Full support 3.0 Full support 3.0 Partial support 2.0 Notes' Notes' Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Chrome implements the new behavior beginning with Samsung Internet 6.0. Full support 1.5 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-
baseline	Chrome Full support 57	Edge Full support 79	Firefox Full support 45	IE No support No	Opera Full support 44	Safari No support No	WebView Android Full support 57	Chrome Android Full support 57	Firefox Android Full support 45	Opera Android Full support 43	Safari iOS No support No	Samsung Internet Android Full support 7.0
first baseline and last baseline	Chrome Full support 57	Edge Full support 79	Firefox Full support 52	IE No support No	Opera Full support 44	Safari No support No	WebView Android Full support 57	Chrome Android Full support 57	Firefox Android Full support 52	Opera Android Full support 43	Safari iOS No support No	Samsung Internet Android Full support 7.0
left and right	Chrome No support No	Edge No support No	Firefox Full support 52	IE No support No	Opera No support No	Safari No support No	WebView Android No support No	Chrome Android No support No	Firefox Android Full support 52	Opera Android No support No	Safari iOS No support No	Samsung Internet Android No support No
safe and unsafe	Chrome No support No Notes' No support No Notes' Notes' This value is recognized, but has no effect.	Edge No support No Notes' No support No Notes' Notes' This value is recognized, but has no effect.	Firefox Full support 63	IE No support No	Opera No support No Notes' No support No Notes' Notes' This value is recognized, but has no effect.	Safari No support No Notes' No support No Notes' Notes' This value is recognized, but has no effect.	WebView Android No support No Notes' No support No Notes' Notes' This value is recognized, but has no effect.	Chrome Android No support No Notes' No support No Notes' Notes' This value is recognized, but has no effect.	Firefox Android Full support 63	Opera Android No support No Notes' No support No Notes' Notes' This value is recognized, but has no effect.	Safari iOS No support No Notes' No support No Notes' Notes' This value is recognized, but has no effect.	Samsung Internet Android No support No Notes' No support No Notes' Notes' This value is recognized, but has no effect.
start and end	Chrome Full support 57	Edge Full support 79	Firefox Full support 45	IE No support No	Opera Full support 44	Safari No support No	WebView Android Full support 57	Chrome Android Full support 57	Firefox Android Full support 45	Opera Android Full support 43	Safari iOS No support No	Samsung Internet Android Full support 7.0
stretch	Chrome Full support 57	Edge Full support 79	Firefox Full support 52	IE No support No	Opera Full support 44	Safari No support No	WebView Android Full support 57	Chrome Android Full support 57	Firefox Android Full support 52	Opera Android Full support 43	Safari iOS No support No	Samsung Internet Android Full support 7.0

Legend

Full support  

Full support

No support  

No support

See implementation notes.'

See implementation notes.

User must explicitly enable this feature.'

User must explicitly enable this feature.

Requires a vendor prefix or different name for use.'

Requires a vendor prefix or different name for use.

Support in Grid layout

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
Supported in Grid Layout	Chrome Full support 57	Edge Full support 16	Firefox Full support 52	IE Partial support 10 Prefixed' Notes' Partial support 10 Prefixed' Notes' Prefixed' Implemented with the vendor prefix: -ms- Notes' Internet Explorer 10 and 11 have the property -ms-grid-row-align, which acts in a similar way to align-self.	Opera Full support 44	Safari Full support 10.1	WebView Android Full support 57	Chrome Android Full support 52	Firefox Android Full support 52	Opera Android Full support 43	Safari iOS Full support 10.3	Samsung Internet Android Full support 6.2

Legend

Full support  

Full support

Partial support  

Partial support

See implementation notes.'

See implementation notes.

Requires a vendor prefix or different name for use.'

Requires a vendor prefix or different name for use.

See also

• CSS Flexbox Guide: Basic Concepts of Flexbox
• CSS Flexbox Guide: Aligning items in a flex container
• CSS Grid Guide: Box alignment in CSS Grid layouts
• CSS Box Alignment
• The align-items property

align-self by Mozilla Contributors is licensed under CC-BY-SA 2.5.