margin-block

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This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The margin-block CSS property defines the logical block start and end margins of an element, which maps to physical margins depending on the element's writing mode, directionality, and text orientation.

/* <length> values */
margin-block: 10px 20px;  /* An absolute length */
margin-block: 1em 2em;   /* relative to the text size */
margin-block: 5% 2%;    /* relative to the nearest block container's width */
margin-block: 10px; /* sets both start and end values */

/* Keyword values */
margin-block: auto;

/* Global values */
margin-block: inherit;
margin-block: initial;
margin-block: unset;

These values corresponds to the margin-top and margin-bottom, or margin-right, and margin-left property depending on the values defined for writing-mode, direction, and text-orientation.

The values can be set individually as margin-block-start and margin-block-end. The inline direction property is margin-inline which sets margin-inline-start, and margin-inline-end.

Syntax

Values

The margin-block property takes the same values as the margin-left property.

Formal syntax

<'margin-left'>{1,2}

Example

HTML

<div>
  <p class="exampleText">Example text</p>
</div>

CSS

div {
  background-color: yellow;
  width: 120px;
  height: 120px;
}

.exampleText {
  writing-mode: vertical-rl;
  margin-block: 20px 40px;
  background-color: #c8c800;
}

Specification

Specification Status Comment
CSS Logical Properties and Values Level 1
The definition of 'margin-block' in that specification.
Editor's Draft Initial definition.
Initial value0
Applies tosame as margin
Inheritedno
Percentagesdepends on layout model
Mediavisual
Computed valueif specified as a length, the corresponding absolute length; if specified as a percentage, the specified value; otherwise, auto
Animation typediscrete
Canonical orderthe unique non-ambiguous order defined by the formal grammar

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
margin-blockChrome Full support 69Edge No support NoFirefox Full support 66IE No support NoOpera Full support 56Safari No support NoWebView Android Full support 69Chrome Android Full support 69Firefox Android Full support 66Opera Android Full support 48Safari iOS No support NoSamsung Internet Android No support No

Legend

Full support  
Full support
No support  
No support

See also