CSS - margin-block-start
Example
HTML Content
<div> <p class="exampleText">Example text</p> </div>
CSS Content
div { background-color: yellow; width: 120px; height: 120px; } .exampleText { writing-mode: vertical-lr; margin-block-start: 20px; background-color: #c8c800; }
Syntax
/* <length> values */ margin-block-start: 10px; /* An absolute length */ margin-block-start: 1em; /* A length relative to the text size */ margin-block-start: 5%; /* A margin relative to the nearest block container's width */ /* Keyword values */ margin-block-start: auto; /* Global values */ margin-block-start: inherit; margin-block-start: initial; margin-block-start: unset;
Values
The margin-block-start
property takes the same values as the margin-left
property.
Formal syntax
<a href="css/margin-left" title="<length> | <percentage> | auto"><'margin-left'></a>
Description
This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use 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 spec changes.
The margin-block-start
CSS property defines the logical block start margin of an element, which maps to a physical margin depending on the element's writing mode, directionality, and text orientation. It corresponds to the margin-top
, margin-right
, margin-bottom
, or margin-left
property depending on the values defined for writing-mode
, direction
, and text-orientation
.
It relates to margin-block-end
, margin-inline-start
, and margin-inline-end
, which define the other margins of the element.
Initial value | 0 |
---|---|
Applies to | same as margin |
Inherited | no |
Percentages | depends on layout model |
Media | visual |
Computed value | if specified as a length, the corresponding absolute length; if specified as a percentage, the specified value; otherwise, auto |
Animatable | no |
Canonical order | the unique non-ambiguous order defined by the formal grammar |
Browser Compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | Not supported | 41.0 (41.0)[1] | Not supported | Not supported | Not supported |
Feature | Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | Not supported | 41.0 (41.0)[1] | Not supported | Not supported | Not supported |
[1] Available since Gecko 38, but behind the preference layout.css.vertical-text.enabled
, then disabled by default.
See Also
- The mapped physical properties:
margin-top
,margin-right
,margin-bottom
, andmargin-left
writing-mode
,direction
,text-orientation
Specification | Status | Comment |
---|---|---|
CSS Logical Properties Level 1 The definition of 'margin-block-start' in that specification. |
Editor's Draft | Initial definition |
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/css/margin-block-start