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Описание

CSS свойство align-item выравнивает flex-элементы текущей flex-линии таким же образом, как и justify-content, но в перпендикулярном направлении.

Начальное значениеnormal
Применяется квсе элементы
Наследуетсянет
Отображениевизуальный
Обработка значениякак указано
Animation typediscrete
Канонический порядокуникальный неоднозначный порядок, определённый формальной грамматикой

Подробнее и больше информации читайте в Using CSS flexible boxes.

Синтаксис

/* Align to cross-start */
align-items: flex-start;

/* Align to cross-end */
align-items: flex-end;

/* Center items in the cross-axis */
align-items: center;

/* Align the items' baselines */
align-items: baseline;

/* Stretch the items to fit */
align-items: stretch;

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

Значения

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
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.
stretch
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.

Формальный синтаксис

normal | stretch | <baseline-position> | [ <overflow-position>? <self-position> ]

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

Спецификации

Specification Status Comment
CSS Flexible Box Layout Module
Определение 'align-items' в этой спецификации.
Кандидат в рекомендации Initial definition

Совместимость с браузерами

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 21.0-webkit 20.0 (20.0)[1] 11.0 [2] 12.10 7.0-webkit 
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support 4.4 ? 20.0 (20.0)[1] Нет 12.10 7.0-webkit

[1] To activate flexbox support in Firefox 18 and 19, the user has to visit about:config and change the value of the layout.css.flexbox.enabled preference to true. Multi-line flexbox has been supported since Firefox 28.

[2] In Internet Explorer 10-11 (but not 12+), if column flex items have align-items: center; set on them and their content is too large, they will overflow the bounds of their container. See Flexbug #2 for more info.

Смотрите также

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