404-page
無料Use when reviewing templates, rendered HTML, or shared components related to Create a custom 404 error page. Validate the final browser-facing markup, not just the source framework abstraction.
日本語の概要は準備中です。原文の説明を表示しています。
Use when applies to HTML documents with `<li>` elements. Also applies to custom ARIA lists where `role='listitem'` must be owned by `role='list'`. Common violations occur in templating systems where list markup is split across components or in CSS resets where developers use `<li>` for layout without proper list parents.
インストールする前に、エージェントに与えられる指示の中身を確認できます。
When a <li> element exists outside a list container, screen readers lose the ability to announce critical context: NVDA and JAWS will not say 'list of 5 items' or 'item 2 of 5' because there is no list context. VoiceOver may announce the orphan <li> as plain text without any group context, stripping users of the structural information that helps them understand how many items exist and where they are in the list.
<li> element must have a direct parent of <ul>, <ol>, or <menu><li> elements are invalid HTML per the HTML Living Standard<li> is inside a valid list containerrole='listitem' must be owned by a role='list' element per WAI-ARIA requirementsFind all <li> elements in the DOM. For each, check that its direct parent element is <ul>, <ol>, or <menu>. Flag any <li> whose parent is <div>, <section>, <nav>, <span>, or any element other than those three. Also check role='listitem' elements to ensure their closest ancestor with a list-related role is role='list'.
For each orphan <li>: (1) Wrap it and any sibling <li> elements in the appropriate list container — use <ul> for unordered items or <ol> for sequentially ordered items. (2) If the <li> was being used purely for styling (e.g., a bullet point visual), replace it with a <div> or <p> and apply the visual style via CSS. (3) If inside a navigation element, ensure <nav><ul><li> nesting is maintained.
The HTML Living Standard specifies that <li> elements are only valid as children of <ul>, <ol>, or <menu>. This is a structural requirement, not a style preference. Screen readers use the list container to announce the list type ('bullet list' vs 'numbered list') and the total item count. Without the container, this context is lost entirely. Additionally, when list-style: none is applied to a <ul>, some browsers strip the list semantics — if this is intentional (e.g., a navigation menu), add role='list' to the <ul> to restore list semantics for screen readers.
Review the rendered markup and interactive states that affect Place list items within list containers. Flag exact elements, roles, labels, focus behavior, or keyboard interactions that violate the rule, and note how to verify the fix with browser accessibility tooling or assistive tech.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/accessibility/listitem
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概要と使いどころ
Use when reviewing templates, rendered HTML, or shared components related to Create a custom 404 error page. Validate the final browser-facing markup, not just the source framework abstraction.
日本語の概要は準備中です。原文の説明を表示しています。
Use when auditing metadata, crawlability, structured data, or indexability related to Create a dedicated About page. Verify the rendered HTML and HTTP response rather than relying only on source files.
日本語の概要は準備中です。原文の説明を表示しています。
Use when reviewing component libraries, page flows, or CI pipelines that need repeatable accessibility checks. Automated testing is strongest at catching structural and attribute-level issues; it does not replace keyboard, screen reader, and manual UX testing.
日本語の概要は準備中です。原文の説明を表示しています。
Use when reviewing sign-in, sign-up, MFA, CAPTCHA, recovery, and re-auth flows. Evaluate the full authentication path, including error handling and backup methods, not just the primary login form.
日本語の概要は準備中です。原文の説明を表示しています。
Use when reviewing templates, rendered HTML, or shared components related to Make notifications accessible. Validate the final browser-facing markup, not just the source framework abstraction.
日本語の概要は準備中です。原文の説明を表示しています。
Use when reviewing rendered HTML, interactive components, or design-system patterns related to Use semantic table markup for screen readers. Check native semantics first, then inspect keyboard behavior, focus flow, accessible names, and screen-reader output where relevant.
日本語の概要は準備中です。原文の説明を表示しています。