grid-area

Dieser Artikel benötigt eine technische Überprüfung. So können Sie helfen.

Unsere Freiwilligen haben diesen Artikel noch nicht in Deutsch übersetzt. Machen Sie mit und helfen Sie, das zu erledigen!

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

Summary

The grid-area CSS property is a shorthand property for grid-row-start, grid-row-end, grid-column-start and grid-column-end specifying a grid item’s size and location within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the edges of its grid area.

If four <grid-line> values are specified, grid-row-start is set to the first value, grid-column-start is set to the second value, grid-row-end is set to the third value, and grid-column-end is set to the fourth value.

When grid-column-end is omitted, if grid-column-start is a <custom-ident>, grid-column-end is set to that <custom-ident>; otherwise, it is set to auto.

When grid-row-end is omitted, if grid-row-start is a <custom-ident>, grid-row-end is set to that <custom-ident>; otherwise, it is set to auto.

When grid-column-start is omitted, if grid-row-start is a <custom-ident>, all four longhands are set to that value. Otherwise, it is set to auto.

Initial valueas each of the properties of the shorthand:
Applies togrid items and absolutely-positioned boxes whose containing block is a grid container
Inheritedno
Mediavisual
Computed valueas each of the properties of the shorthand:
Animatableno
Canonical orderthe unique non-ambiguous order defined by the formal grammar

Syntax

/* Keyword values */
grid-area: auto;
grid-area: auto / auto;
grid-area: auto / auto / auto;
grid-area: auto / auto / auto / auto;

/* <custom-ident> values */
grid-area: somegridarea;
grid-area: 2;
grid-area: [linename1] 100px [linename2 linename3];
grid-area: somegridarea / 4;
grid-area: 2 / [linename1] 100px [linename2 linename3] / 4;
grid-area: [linename1] 100px [linename2 linename3] /
           somegridarea / 2 / 4;

/* <integer> + <custom-ident> values */
grid-area: somegridarea 4;
grid-area: somegridarea 4 / somegridarea 6;
grid-area: somegridarea 4 / somegridarea 6 / somegridarea 3;
grid-area: somegridarea 4 / somegridarea 6 / somegridarea 3 / somegridarea 8;

/* span + <integer> + <custom-ident> values */
grid-area: span 3;
grid-area: span somegridarea;
grid-area: 5 somegridarea span;
grid-area: span 3 / span 6;
grid-area: span somegridarea / span 4 / 3 somegridarea span;
grid-area: span 5 / span somegridarea / 2 somegridarea span /
           somegridarea span 6;

/* Global values */
grid-area: inherit;
grid-area: initial;
grid-area: unset;

Values

auto
Is a keyword indicating that the property contributes nothing to the grid item’s placement, indicating auto-placement, an automatic span, or a default span of 1.
<custom-ident>
If there is a named line with the name '<custom-ident>-start'/'<custom-ident>-end', it contributes the first such line to the grid item’s placement.

Note: Named grid areas automatically generate implicit named lines of this form, so specifying grid-area: foo; will choose the start/end edge of that named grid area (unless another line named foo-start/foo-end was explicitly specified before it).

Otherwise, this is treated as if the integer 1 had been specified along with the <custom-ident>.

<integer> && <custom-ident>?
Contributes the nth grid line to the grid item’s placement. If a negative integer is given, it instead counts in reverse, starting from the end edge of the explicit grid.

If a name is given as a <custom-ident>, only lines with that name are counted. If not enough lines with that name exist, all implicit grid lines are assumed to have that name for the purpose of finding this position.

An <integer> value of 0 is invalid.

span && [ <integer> || <custom-ident> ]
Contributes a grid span to the grid item’s placement such that the corresponding edge of the grid item’s grid area is n lines from the opposite edge.

If a name is given as a <custom-ident>, only lines with that name are counted. If not enough lines with that name exist, all implicit grid lines on the side of the explicit grid corresponding to the search direction are assumed to have that name for the purpose of counting this span.

If the <integer> is omitted, it defaults to 1. Negative integers or 0 are invalid.

Formal syntax

<grid-line> [ / <grid-line> ]{0,3}

where
<grid-line> = auto | <custom-ident> | [ <integer> && <custom-ident>? ] | [ span && [ <integer> || <custom-ident> ] ]

Example

HTML Content

<div id="grid">
  <div id="item1"></div>
  <div id="item2"></div>
  <div id="item3"></div>
</div>

CSS Content

#grid {
  display: grid;
  height: 100px;
  grid-template: repeat(4, 1fr) / 50px 100px;
}

#item1 {
  background-color: lime;
  grid-area: 2 / 2 / auto / span 3;
}

#item2 {
  background-color: yellow;
}

#item3 {
  background-color: blue;
}

Specifications

Specification Status Comment
CSS Grid Layout
The definition of 'grid-area' in that specification.
Working Draft Initial definition

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Edge Opera Safari
Basic support 29.0[1] 40.0 (40.0)[2] 10.0-ms[3] 20-ms[3] 28.0[1] Nightly build-webkit
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support No support 10.0-ms[3] No support No support

[1] Implemented behind the experimental Web Platform features flag in chrome://flags.

[2] Implemented behind the preference layout.css.grid.enabled, defaulting to false.

[3] Internet Explorer implements an older version of the specification, which only defines a grid-row-span and a grid-column-span property, and is using the -ms prefix. Therefore part of the property is implemented there as -ms-grid-row-span and -ms-grid-column-span, respectively.

See also

Schlagwörter des Dokuments und Mitwirkende

Schlagwörter: 
 Mitwirkende an dieser Seite: rolfedh, Sebastianz
 Zuletzt aktualisiert von: rolfedh,