# Background colour

Show
Always visible

Useful for when a Background Image is shown.

Visible on scroll

The page may not scroll if Bookmarks are not shown.

May not be visible if Layout Alignment is Horizontal as the Bookmarks won't pass under the header.

Theme colour

Use the Background colour defined by the Theme.

Custom colour

Use a custom Background colour.

Opacity

Corner radius

May not be visible if Theme Radius is set to 0.