CSS scroll-padding-block-start Property
Example
Set scroll padding in block direction to 20px from the start of the container to the snap position:
div {
scroll-padding-block-start: 20px;
}
Try it Yourself »
More "Try it Yourself" examples below.
Definition and Usage
The scroll-padding-block-start property specifies
the distance in block direction from the start of the container to the snap position on the child elements.
This means that when you stop scrolling, the scrolling will quickly adjust and stop at a specified distance in block direction, between the snap position and the container.
Block direction is where the next line is put compared to the position of an existing line, and this is also how tags with CSS display: block; like <p> and <div> tags are laid out on a page. Block direction is dependent on the written language, i.e. Mongolian where new lines are laid out left to right which makes block direction left to right, while pages in English have a downward block direction. Block direction can be defined with CSS property writing-mode.
Snap position is the position on the child element where it snaps into place in the container when you stop scrolling.
Note: This property only works if the scroll-snap-align property is set to 'start' for the block direction.
To see the effect from the scroll-padding-block-start property, the scroll-snap-align property must be set on the child elements, and the scroll-padding-block-start and the scroll-snap-type properties must be set on the parent element.
| Default value: | auto |
|---|---|
| Inherited: | no |
| Animatable: | no. Read about animatable |
| Version: | CSS3 |
| JavaScript syntax: | object.style.scrollPaddingBlockStart="20px" Try it |
Browser Support
The numbers in the table specify the first browser version that fully supports the property.
| Property | |||||
|---|---|---|---|---|---|
| scroll-padding-block-start | 69.0 | 79.0 | 68.0 | 15.0 | 56.0 |
CSS Syntax
scroll-padding-block-start: auto|value|initial|inherit;
Property Values
| Value | Description |
|---|---|
| auto | Default value. The browser calculates the padding |
| length | Specifies scroll-padding-block-start in px, pt, cm, etc. Negative values are not allowed. Read about length units |
| % | Specifies the padding in percent of the width of the containing element |
| initial | Sets this property to its default value. Read about initial |
| inherit | Inherits this property from its parent element. Read about inherit |
More Examples
Image gallery
The scroll-padding-block-start property can be used in an image gallery with snap behaviour, to push images below a fixed element:
#container {
scroll-padding-block-start: 30px;
}
Example
With the writing-mode property value of the container element set to vertical-rl, the start of the container and child elements in block direction is moved from top to right side. This affects the scroll snap behaviour, and how the scroll-padding-block-start property works:
#container {
scroll-padding-block-start: 20px;
writing-mode: vertical-rl;
}
Try it Yourself »
Related Pages
CSS scroll-snap-align property: CSS Scroll-snap-align property
CSS scroll-snap-type property: CSS Scroll-snap-type property
CSS writing-mode property: CSS Writing-mode property