When tabbing down the page, a focused item is partially hidden by the footer because content in the viewport scrolls without sufficient scroll padding . Back to top 2.4.13 Focus Appearance Level AAA (Added in 2.2) When the keyboard focus indicator is visible, an area of the focus indicator meets all the following: is at least as large as the area of a 2 CSS pixel thick perimeter of the unfocused component or sub-component, and has a contrast ratio of at least 3:1 between the same pixels in the focused and unfocused states. Exceptions: The focus indicator is determined by the user agent and cannot be adjusted by the author, or The focus indicator and the indicator’s background color are not modified by the author. Note 1: What is perceived as the user interface component or sub-component (to determine enclosure or size) depends on its visual presentation. The visual presentation includes the component's visible content, border, and component-specific background.