inset-block-end
Baseline Widely available *
This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2021.
* Some parts of this feature may have varying levels of support.
The inset-block-end CSS property defines the logical block end offset of an element, which maps to a physical inset depending on the element's writing mode, directionality, and text orientation. It corresponds to the top, right, bottom, or left property depending on the values defined for writing-mode, direction, and text-orientation.
This inset property has no effect on non-positioned elements.
Try it
writing-mode: horizontal-tb; writing-mode: vertical-rl; writing-mode: horizontal-tb; direction: rtl; writing-mode: vertical-lr; <section id="default-example"> <div class="example-container" id="example-element"> <div id="abspos">I am absolutely positioned with inset-block-end: 20px</div> <p> As much mud in the streets as if the waters had but newly retired from the face of the earth, and it would not be wonderful to meet a Megalosaurus, forty feet long or so, waddling like an elephantine lizard up Holborn Hill. </p> </div> </section> #example-element { border: 0.75em solid; padding: 0.75em; position: relative; width: 100%; min-height: 200px; unicode-bidi: bidi-override; } #abspos { background-color: yellow; color: black; border: 3px solid red; position: absolute; inset-block-end: 20px; inline-size: 140px; min-block-size: 200px; } Syntax
css
/* <length> values */ inset-block-end: 3px; inset-block-end: 2.4em; inset-block-end: calc(anchor(start) + 20px); inset-block-end: anchor-size(--my-anchor width, 10%); /* <percentage>s of the width or height of the containing block */ inset-block-end: 10%; /* Keyword value */ inset-block-end: auto; /* Global values */ inset-block-end: inherit; inset-block-end: initial; inset-block-end: revert; inset-block-end: revert-layer; inset-block-end: unset; Values
The inset-block-end property takes the same values as the left property.
Formal definition
| Initial value | auto |
|---|---|
| Applies to | positioned elements |
| Inherited | no |
| Percentages | logical-height of containing block |
| Computed value | same as box offsets: top, right, bottom, left properties except that directions are logical |
| Animation type | a length, percentage or calc(); |
Formal syntax
inset-block-end =
auto |
<length-percentage>
<length-percentage> =
<length> |
<percentage>
Examples
Setting block end offset
HTML
html
<div> <p class="exampleText">Example text</p> </div> CSS
css
div { background-color: yellow; width: 120px; height: 120px; } .exampleText { writing-mode: vertical-rl; position: relative; inset-block-end: 20px; background-color: #c8c800; } Result
Specifications
| Specification |
|---|
| CSS Logical Properties and Values Level 1 # propdef-inset-block-end |
| CSS Positioned Layout Module Level 3 # propdef-inset-block-end |
Browser compatibility
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See also
- The properties which defines other insets:
inset-block-start,inset-inline-start, andinset-inline-end - The mapped physical properties:
top,right,bottom, andleft writing-mode,direction,text-orientation