Review CSS focus indicators, the visible outlines that show which element receives keyboard input. Identify missing, clipped, or misplaced indicators, check contrast and responsive states, and guide changes that make keyboard navigation easier to follow.
Use when reviewing stylesheets, component styles, and responsive behavior related to Provide visible custom focus indicators. Check the rendered layout across breakpoints and interaction states before proposing a fix.
Review the instructions the agent will receive before you install.
Users who navigate by keyboard (people with motor disabilities, power users, people in assistive technology contexts) rely entirely on focus indicators to know where they are on the page. Removing outlines without replacement makes an entire site unusable for keyboard users. WCAG 2.4.7 requires a visible focus indicator, and WCAG 2.4.13 defines a stronger size-and-contrast target for custom indicators.
overflow: hiddenFind all instances of outline: none, outline: 0, or :focus { outline: none } in this CSS. Check if they provide an alternative visible focus indicator. If the replacement uses pseudo-elements, also verify the ring cannot be clipped or misplaced by overflow or missing positioning context.
Replace outline: none on :focus with :focus-visible styles that provide a clearly visible custom focus ring with appropriate contrast.
Explain the difference between :focus and :focus-visible, why focus styles matter for accessibility, and how to design an accessible focus ring.
Review stylesheets, component styles, and responsive states related to Provide visible custom focus indicators. Flag exact selectors, declarations, or breakpoints that violate the rule in the rendered UI.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/css/focus-styles
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Create and review custom 404 pages that help visitors recover from broken or moved links through search and navigation. Check the rendered page and HTTP response so missing content returns a proper 404 status.
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Review sign-in, registration, multi-factor authentication, and account recovery for accessibility barriers. Find blocked paste, difficult code entry, and inaccessible backup methods, then suggest authentication paths that support password managers, autofill, or device approval.
Review form errors, success messages, and live updates so screen reader users receive important notifications. Check the HTML delivered to the browser, announcement settings, display duration, and dismissal controls, then identify specific elements that need changes.
Review HTML tables so screen reader users can understand how headers and data relate. Check header markup, table descriptions, and merged cells, then identify specific fixes and ways to verify them.