The inset-block-start
CSS property defines the logical block start 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
.
/* <length> values */ inset-block-start: 3px; inset-block-start: 2.4em; /* <percentage>s of the width or height of the containing block */ inset-block-start: 10%; /* Keyword value */ inset-block-start: auto; /* Global values */ inset-block-start: inherit; inset-block-start: initial; inset-block-start: unset;
The inset-block-start
property takes the same values as the left
property.
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(); |
<'top'>
<div> <p class="exampleText">Example text</p> </div>
div { background-color: yellow; width: 120px; height: 120px; } .exampleText { writing-mode: vertical-lr; position: relative; inset-block-start: 20px; background-color: #c8c800; }
Specification | Status | Comment |
---|---|---|
CSS Logical Properties and Values Level 1 The definition of 'inset-block-start' in that specification. | Editor's Draft | Initial definition |
Desktop | ||||||
---|---|---|---|---|---|---|
inset-block-start |
69
|
79
|
63
|
No | 56
|
No |
Mobile | ||||||
---|---|---|---|---|---|---|
inset-block-start |
No | 69
|
63
|
48
|
No | No |
inset-block-end
, inset-inline-start
, and inset-inline-end
top
, right
, bottom
, and left
writing-mode
, direction
, text-orientation
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/inset-block-start