Bar and bottom

Reading bar

• Off, top, or bottom
• Height from 2px to 8px, color, track, and its own z-index
• Can stay on when the button is hidden
• Hidden on pages that do not scroll

Scroll to bottom

• Off by default
• Optional label, tooltip, and accessible name
• Stack above or beside the top button, with a gap
• Hides when the visitor is within the near-bottom distance (default 48px)
• Optional separate icon and background colors