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The align-self CSS property aligns flex items of the current flex line overriding the align-items value. If any of the flex item's cross-axis margin is set to auto, then align-self is ignored.

Initial valueauto
Applies toflex items, including in-flow pseudo-elements
Computed valueauto 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 typediscrete
Canonical orderthe unique non-ambiguous order defined by the formal grammar

See Using CSS flexible boxes for more properties and information.


/* Keyword values */
align-self: auto;
align-self: flex-start;
align-self: flex-end;
align-self: center;
align-self: baseline;
align-self: stretch;

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


Computes to the parent's align-items value.
The cross-start margin edge of the flex item is flushed with the cross-start edge of the line.
The cross-end margin edge of the flex item is flushed with the cross-end edge of the line.
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.
All flex items are aligned such that their baselines align. The item with the largest distance between its cross-start margin edge and its baseline is flushed with the cross-start edge of the line.
Flex items are stretched such as the cross-size of the item's margin box is the same as the line while respecting width and height constraints.

Formal syntax

auto | flex-start | flex-end | center | baseline | stretch


Specification Status Comment
CSS Box Alignment Module
The definition of 'align-self' in that specification.
Working Draft Initial definition

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support 21.0-webkit
20.0 (20.0)[1] 11.0 12.10 No support
Feature Android Chrome for Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? ? (Yes)-webkit
(Yes) ? No support 12.10 No support

[1] Firefox supports only single-line flexbox until Firefox 27. To activate flexbox support, for Firefox 18 and 19, the user has to change the about:config preference layout.css.flexbox.enabled to true.

In addition to the unprefixed support, Gecko 48.0 (Firefox 48.0 / Thunderbird 48.0 / SeaMonkey 2.45) added support for a -webkit prefixed version of the property for web compatibility reasons behind the preference layout.css.prefixes.webkit, defaulting to false. Since Gecko 49.0 (Firefox 49.0 / Thunderbird 49.0 / SeaMonkey 2.46) the preference defaults to true.

See also

Document Tags and Contributors

 Last updated by: Konrud,