all

Описание

The CSS all shorthand property resets all properties, apart from unicode-bidi and direction, to their initial or inherited value.

Начальное значение	На практике начального значения нет
Применяется к	все элементы
Наследуется	нет
Отображение	Для этого нет практического применения.
Обработка значения	как указанное значение, применяется к каждому свойству этой короткой записи.
Анимируемость	как каждое из подсвойств этого свойства (все свойства, кроме `unicode-bidi` и `direction`)
Канонический порядок	уникальный не однозначный порядок, определённый формальной грамматикой

Синтаксис

all: initial;
all: inherit;
all: unset;

/* CSS Cascading and Inheritance Level 4 */
all: revert;

Values

initial

This keyword indicates to change all the properties applying to the element or the element's parent to their initial value. unicode-bidi and direction values are not affected.

inherit

This keyword indicates to change all the properties applying to the element or the element's parent to their parent value. unicode-bidi and direction values are not affected.

unset

This keyword indicates to change all the properties applying to the element or the element's parent to their parent value if they are inheritable or to their initial value if not. unicode-bidi and direction values are not affected.

revert

If the cascaded value of a property is the revert keyword, the behavior depends on the origin to which the declaration belongs:

user-agent origin: Equivalent to unset.
user origin: Rolls back the cascade to the user-agent level, so that the specified value is calculated as if no author-level or user-level rules were specified for this property.
author origin: Rolls back the cascade to the user level, so that the specified value is calculated as if no author-level rules were specified for this property. For the purpose of revert, this origin includes the Override and Animation origins.

Формальный синтаксис

initial | inherit | unset

Примеры

HTML

<blockquote id="quote">Lorem ipsum dolor sit amet, consectetur adipiscing elit.</blockquote> Phasellus eget velit sagittis.

CSS

html {
  font-size: small;
  background-color: #F0F0F0;
  color: blue;
}

blockquote {
  background-color: skyblue;
  color: red;
}

Результат:

No `all` property

<blockquote id="quote">Lorem ipsum dolor sit amet, consectetur adipiscing elit.</blockquote> Phasellus eget velit sagittis.

html { font-size: small; background-color: #F0F0F0; color:blue; }
blockquote { background-color: skyblue;  color: red; }

The <blockquote> uses the browsers default styling together with a specific background and text color. It also behaves as a block element: the text that follows it is beneath it.

`all:unset`

<blockquote id="quote">Lorem ipsum dolor sit amet, consectetur adipiscing elit.</blockquote> Phasellus eget velit sagittis.

html { font-size: small; background-color: #F0F0F0; color:blue; }
blockquote { background-color: skyblue;  color: red; }
blockquote { all: unset; }

The <blockquote> doesn't use the browser default styling: it is an inline element now (initial value), its background-color is transparent (initial value), but its font-size is still small (inherited value) and its color is blue (inherited value).

`all:initial`

<blockquote id="quote">Lorem ipsum dolor sit amet, consectetur adipiscing elit.</blockquote> Phasellus eget velit sagittis.

html { font-size: small; background-color: #F0F0F0; color:blue; }
blockquote { background-color: skyblue;  color: red; }
blockquote { all: initial; }

The <blockquote> doesn't use the browser default styling: it is an inline element now (initial value), its background-color is transparent (initial value), its font-size is normal (initial value) and its color is black (initial value).

`all:inherit`

<blockquote id="quote">Lorem ipsum dolor sit amet, consectetur adipiscing elit.</blockquote> Phasellus eget velit sagittis.

html { font-size: small; background-color: #F0F0F0; color:blue; }
blockquote { background-color: skyblue; color: red; }
blockquote { all: inherit; }

The <blockquote> doesn't use the browser default styling: it is a block element now (inherited value from its containing <div>), its background-color is transparent (inherited value), its font-size is small (inherited value) and its color is blue (inherited value).

Спецификации

Specification	Status	Comment
CSS Cascading and Inheritance Level 3 Определение 'all' в этой спецификации.	Кандидат в рекомендации	Initial definition.
CSS Cascading and Inheritance Level 4 Определение 'all' в этой спецификации.	Рабочий черновик	Added the `revert` value.

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	37	27 (27)	Нет	24	Нет
`revert`	Нет	Нет	Нет	Нет	9.1

Feature	Android	Firefox Mobile (Gecko)	IE Phone	Opera Mobile	Safari Mobile
Basic support	Нет	27.0 (27)	Нет	Нет	Нет
`revert`	Нет	Нет	Нет	Нет	9.3

Смотрите также

The CSS-wide property values: initial, inherit, unset, and revert.