From 4b1a9203c547c019fc5398082ae19a3f3d4c3efe Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Tue, 8 Dec 2020 14:41:15 -0500 Subject: initial commit --- files/ar/web/css/reference/index.html | 179 ++++++++++++++++++++++++++++++++++ 1 file changed, 179 insertions(+) create mode 100644 files/ar/web/css/reference/index.html (limited to 'files/ar/web/css/reference') diff --git a/files/ar/web/css/reference/index.html b/files/ar/web/css/reference/index.html new file mode 100644 index 0000000000..e0d134fb04 --- /dev/null +++ b/files/ar/web/css/reference/index.html @@ -0,0 +1,179 @@ +--- +title: CSS reference +slug: Web/CSS/Reference +translation_of: Web/CSS/Reference +--- +
{{CSSRef}}
+ +

Use this CSS reference to browse an alphabetical index of all the standard CSS properties, pseudo-classes, pseudo-elements, data types, and at-rules. You can also browse a list of all the CSS selectors organized by type and a list of key CSS concepts. Also included is a brief DOM-CSS / CSSOM reference.

+ +

Basic rule syntax

+ +

Style rule syntax

+ +
style-rule ::=
+    selectors-list {
+      properties-list
+    }
+
+ +

... where :

+ +
selectors-list ::=
+    selector[:pseudo-class] [::pseudo-element]
+    [, selectors-list]
+
+properties-list ::=
+    [property : value] [; properties-list]
+
+ +

See selector, pseudo-class, pseudo-element lists below. The syntax for each specified value depends on the data type defined for each specified property.

+ +

Style rule examples

+ +
strong {
+  color: red;
+}
+
+div.menu-bar li:hover > ul {
+  display: block;
+}
+
+ +

For a beginner-level introduction to the syntax of CSS selectors, please see this tutorial. Be aware that any CSS syntax error in a rule definition invalidates the entire rule. Invalid rules are ignored by the browser. Note that CSS rule definitions are entirely (ASCII) text-based, whereas DOM-CSS / CSSOM (the rule management system) is object-based.

+ +

At-rule syntax

+ +

As the structure of at-rules varies widely, please see At-rule to find the syntax of the specific one you want.

+ +

Keyword index

+ +
+

Note: The property names in this index do not include the JavaScript names where they differ from the CSS standard names.

+
+ +
{{CSS_Ref}}
+ +

Selectors

+ +

The following are the various selectors, which allow styles to be conditional based on various features of elements within the DOM.

+ +

Simple selectors

+ +

Simple selectors are fundamental selectors; these are the most basic selectors that are frequently combined to create other, more complex selectors.

+ + + +

Combinators

+ +

Combinators are selectors that establish a relationship between two or more simple selectors, such as "A is a child of B" or "A is adjacent to B."

+ +
+
Adjacent sibling combinator A + B
+
Specifies that the elements selected by both A and B have the same parent and that the element selected by B immediately follows the element selected by A horizontally.
+
General sibling combinator A ~ B
+
Specifies that the elements selected by both A and B share the same parent and that the element selected by A comes before—but not necessarilyl immediately before—the element selected by B.
+
Child combinator A > B
+
Specifies that the element selected by B is the direct child of the element selected by A.
+
Descendant combinator A B
+
Specifies that the element selected by B is a descendant of the element selected by A, but is not necessarily a direct child.
+
Column combinator A || B {{Experimental_Inline}}
+
Specifies that the element selected by B is located within the table column specified by A. Elements which span multiple columns are considered to be a member of all of those columns.
+
+ +

Pseudo-classes

+ +
+ +
+ +

Pseudo-elements

+ +
+ +
+ +
+

See also: A complete list of selectors in the Selectors Level 3 specification.

+
+ +

Concepts

+ +

Syntax and semantics

+ + + +

Values

+ + + +

Layout

+ + + +

DOM-CSS / CSSOM

+ +

Major object types

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Important methods

+ + + +

See also

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