The scroll-padding-block-start property defines offsets for the start edge in the block dimension of the optimal viewing region of the scrollport: the region used as the target region for placing things in view of the user. This allows the author to exclude regions of the scrollport that are obscured by other content (such as fixed-positioned toolbars or sidebars) or to put more breathing room between a targeted element and the edges of the scrollport.

/* Keyword values */ scroll-padding-block-start: auto;  /* <length> values */ scroll-padding-block-start: 10px; scroll-padding-block-start: 1em; scroll-padding-block-start: 10%;  /* Global values */ scroll-padding-block-start: inherit; scroll-padding-block-start: initial; scroll-padding-block-start: revert; scroll-padding-block-start: unset; 

scroll-padding-block-start

The scroll-padding-block-start property defines offsets for the start edge in the block dimension of the optimal viewing region of the scrollport: the region used as the target region for placing things in view of the user. This allows the author to exclude regions of the scrollport that are obscured by other content (such as fixed-positioned toolbars or sidebars) or to put more breathing room between a targeted element and the edges of the scrollport.

Syntax

/* Keyword values */ scroll-padding-block-start: auto;  /* <length> values */ scroll-padding-block-start: 10px; scroll-padding-block-start: 1em; scroll-padding-block-start: 10%;  /* Global values */ scroll-padding-block-start: inherit; scroll-padding-block-start: initial; scroll-padding-block-start: revert; scroll-padding-block-start: unset; 

Values

<length-percentage>

An inwards offset from the block start edge of the scrollport, as a valid length or a percentage.

auto

The offset is determined by the user agent. This will generally be 0px, but a user agent is able to detect and do something else if a non-zero value is more appropriate.

Formal definition

Initial value	auto
Applies to	scroll containers
Inherited	no
Percentages	relative to the scroll container's scrollport
Computed value	as specified
Animation type	by computed value type

Formal syntax

auto | <length-percentage>
where <length-percentage> = <length> | <percentage>

Specifications

Specification
CSS Scroll Snap Module Level 1 # padding-longhands-logical

See also

CSS Scroll Snap Well-Controlled Scrolling with CSS Scroll Snap