padding-block-start

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage 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 specification changes.

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. It corresponds to the padding-top, padding-right, padding-bottom, or padding-left property depending on the values defined for writing-mode, direction, and text-orientation.

It relates to padding-block-end, padding-inline-start, and padding-inline-end, which define the other paddings of the element.

/* <length> values */
padding-block-start: 10px;      /* An absolute length */
padding-block-start: 1em;       /* A length relative to the text size */
/* <percentage> 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: unset;

Initial value	`0`
Applies to	all elements
Inherited	no
Percentages	logical-width of containing block
Media	visual
Computed value	as `<length>`
Animation type	discrete
Canonical order	the unique non-ambiguous order defined by the formal grammar

Syntax

Values

The padding-block-start property takes the same values as the padding-left property.

Formal syntax

<'padding-left'>

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;
  padding-block-start: 20px;
  background-color: #C8C800;
}

Specification

Specification	Status	Comment
CSS Logical Properties Level 1 The definition of 'padding-block-start' in that specification.	Editor's Draft	Initial definition

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. The preference has been removed in Gecko 51 and this property cannot be disabled since this version.

Syntax

Values

Formal syntax

Example

HTML Content

CSS Content

Specification

Browser compatibility

See also

Document Tags and Contributors