CSS - block-size
Example
HTML Content
<p class="exampleText">Example text</p>
CSS Content
.exampleText { writing-mode: vertical-rl; background-color: yellow; block-size: 200px; }
Syntax
/* <length> values */ block-size: 300px; block-size: 25em; /* <percentage> values */ block-size: 75%; /* Keyword values */ block-size: 25em border-box; block-size: 75% content-box; block-size: max-content; block-size: min-content; block-size: available; block-size: fit-content; block-size: auto; /* Global values */ block-size: inherit; block-size: initial; block-size: unset;
Values
The block-size
property takes the same values as the width
and height
properties.
Formal syntax
<a title="[ <length> | <percentage> ] && [ border-box | content-box ]? | available | min-content | max-content | fit-content | auto" href="css/width"><'width'></a>
Description
The block-size
CSS property defines the horizontal or vertical size of an element's block depending on its writing mode. It corresponds to the width
or the height
property depending on the value defined for writing-mode
.
If the writing mode is vertically oriented, the value of block-size
relates to the width of the element, otherwise it relates to the height of the element. It relates to inline-size
, which defines the other dimension of the element.
Initial value | auto |
---|---|
Applies to | same as width and height |
Inherited | no |
Percentages | block-size of containing block |
Media | visual |
Computed value | same as width and height |
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 | No support | 41.0 (41.0)[1] | No support | No support | No support |
Feature | Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | No support | 41.0 (41.0)[1] | No support | No support | No support |
[1] Available since Gecko 38, but behind the preference layout.css.vertical-text.enabled
, then disabled by default.
See Also
- The mapped physical properties:
width
andheight
writing-mode
Specification | Status | Comment |
---|---|---|
CSS Logical Properties Level 1 The definition of 'block-size' 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/block-size