CSS justify-self

The CSS justify-self property aligns a box within its containing block along the inline/row/main axis.

This property can be used to override any alignment that has been set at the container level using the justify-items property.

Syntax

These values are explained below.

Possible Values

auto

Uses the value provided by the justify-items property on the parent container. If the element has no parent, then this value computes to normal.

normal

Represents the "default" alignment for the layout mode.

stretch

Items are stretched such as the cross-size of the item's margin box is the same as the line while still respecting min-height, min-width, max-height, and max-height constraints.

baseline-position

<baseline-position> = [ first | last ]? baseline

The first and last values give a box a baseline alignment preference. The default value is first.

Values:

baseline

Computes to first baseline.

first baseline

Aligns the alignment baseline of the box's first baseline set with the corresponding baseline of its alignment context. The fallback alignment for first baseline is start.

last baseline

Aligns the alignment baseline of the box's last baseline set with the corresponding baseline of its alignment context. The fallback alignment for last baseline is end.

overflow-position

These values deal with cases where the alignment subject is larger than the alignment container. In other words, the content will overflow, potentially causing a loss of data.

safe

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

unsafe

The given alignment value is honored, regardless of the relative sizes of the alignment subject and alignment container.

self-position

<self-position> = center | start | end | self-start | self-end | flex-start | flex-end | left | right;

Possible values:

center

Centers the alignment subject within its alignment container.

start

Aligns the alignment subject to be flush with the alignment container's start edge in the appropriate axis.

end

Aligns the alignment subject to be flush with the alignment container's end edge in the appropriate axis.

self-start

Aligns the alignment subject to be flush with the edge of the alignment container corresponding to the alignment subject's start side in the appropriate axis.

self-end

Aligns the alignment subject to be flush with the edge of the alignment container corresponding to the alignment subject's end side in the appropriate axis.

left

Aligns the alignment subject to be flush with the alignment container's line-left edge. If the property's axis is not parallel with the inline axis, this value behaves as start.

right

Aligns the alignment subject to be flush with the alignment container's line-right edge. If the property's axis is not parallel with the inline axis, this value behaves as start.

flex-start

Only used in flex layout. The cross-start margin edge of the flex item is placed flush with the cross-start edge of the line.

flex-end

Only used in flex layout. The cross-end margin edge of the flex item is placed flush with the cross-end edge of the line.

In addition, all CSS properties also accept the following CSS-wide keyword values as the sole component of their property value:

initial

Represents the value specified as the property's initial value.

inherit

Represents the computed value of the property on the element's parent.

unset

This value acts as either inherit or initial, depending on whether the property is inherited or not. In other words, it sets all properties to their parent value if they are inheritable or to their initial value if not inheritable.

Basic Property Information

Example Code

Basic CSS

Working Example within an HTML Document

This example uses CSS grid. It aligns grid items within a grid container.

CSS Specifications

The justify-self property is defined in CSS Box Alignment Module Level 3.

Browser Support

Browser support for CSS properties can vary, particularly for newer or experimental features. Check current browser compatibility before using a property in production, especially when supporting older browsers.

The following table provided by Caniuse.com shows the level of browser support for this feature.

Initial Value

CSS properties have an initial value that applies when the property has not been explicitly set. The initial value is different from the value inherited from a parent element and may vary between properties.

Inheritance

Some CSS properties inherit their computed value from their parent element by default, while others do not. The inherit, initial, unset, and revert keywords can also be used to control how a property gets its value.

Vendor Prefixes

Most modern CSS properties use the standard, unprefixed syntax. Vendor-prefixed properties such as -webkit- are mainly relevant to older browser versions or specific features and should only be used when required by your browser support targets.