padding-block-start
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.
The padding-block-start
CSS property defines the logical block start padding of an element, which maps to a physical padding depending on the element's writing mode, directionality, and text orientation.
Try it
padding-block-start: 20px;
writing-mode: horizontal-tb;
padding-block-start: 20px;
writing-mode: vertical-rl;
padding-block-start: 5em;
writing-mode: horizontal-tb;
padding-block-start: 5em;
writing-mode: vertical-lr;
Far out in the uncharted backwaters of the unfashionable end of the
western spiral arm of the Galaxy lies a small unregarded yellow sun.
#example-element {
border: 10px solid #ffc129;
overflow: hidden;
text-align: left;
}
.box {
border: dashed 1px;
unicode-bidi: bidi-override;
}
Syntax
/* values */
padding-block-start: 10px; /* An absolute length */
padding-block-start: 1em; /* A length relative to the text size */
/* value */
padding-block-start: 5%; /* A padding relative to the block container's width */
/* Global values */
padding-block-start: inherit;
padding-block-start: initial;
padding-block-start: revert;
padding-block-start: revert-layer;
padding-block-start: unset;
Values
-
The size of the padding as a fixed value. Must be nonnegative.
-
The size of the padding as a percentage, relative to the inline-size (width in a horizontal language) of the containing block. Must be nonnegative.
Description
The padding-block-start
property takes the same values as physical padding properties such as padding-top
. However, it can be equivalent to padding-top
, padding-bottom
, padding-left
, or padding-right
depending on the values set for writing-mode
, direction
, and text-orientation
.
It relates to padding-block-end
, padding-inline-start
, and padding-inline-end
, which define the other padding values of the element.
Formal definition
Initial value | 0 |
---|---|
Applies to | all elements, except table-row-group , table-header-group , table-footer-group , table-row , table-column-group and table-column |
Inherited | no |
Percentages | logical-width of containing block |
Computed value | as
|
Animation type | a length |
Formal syntax
padding-block-start =
<'padding-top'>=
=
|
Examples
Setting block start padding for vertical text
HTML
Example text
CSS
div {
background-color: yellow;
width: 120px;
height: 120px;
}
.exampleText {
writing-mode: vertical-lr;
padding-block-start: 20px;
background-color: #c8c800;
}
Result
Specifications
Specification |
---|
CSS Logical Properties and Values Level 1 # padding-properties |
Browser compatibility
See also
- CSS Logical Properties and Values
- The mapped physical properties:
padding-top
,padding-right
,padding-bottom
, andpadding-left
writing-mode
,direction
,text-orientation