The ability to navigate and interact with a website using only keyboard controls, essential for accessibility. Test tab order, focus visibility, and keyboard-activated interactions to ensure full functionality. Many users rely on keyboard navigation due to motor disabilities or preference.

An interactive element allowing users to switch between content panels without leaving the page, saving space and organizing related content. Tabs work best for equally important parallel content, not sequential steps. Ensure tab interfaces are keyboard accessible with proper ARIA roles.

A CSS property controlling stack order when elements overlap, with higher values appearing in front of lower values. Z-index management becomes complex with many overlapping elements—establish systematic layer naming. In Framer, layer order in the sidebar determines stacking with z-index overrides available.