Create a landmark-elements group

features/aside.yml

@@ -1,6 +1,6 @@
 name: <aside>
 description: The `<aside>` element represents a portion of a document whose content is only indirectly related to the document's main content.
 spec: https://html.spec.whatwg.org/multipage/sections.html#the-aside-element
-group: html-elements
+group: landmark-elements
 # Note: <aside> is part of https://caniuse.com/html5semantic but that feature
 # covers many unrelated elements and is therefore not linked here.

features/header-footer.yml

@@ -3,6 +3,6 @@ description: The `<header>` and `<footer>` HTML elements represent content that
 spec:
   - https://html.spec.whatwg.org/multipage/sections.html#the-header-element
   - https://html.spec.whatwg.org/multipage/sections.html#the-footer-element
-group: html-elements
+group: landmark-elements
 # Note: <header> and <footer> are part of https://caniuse.com/html5semantic but
 # that feature covers many unrelated elements and is therefore not linked here.

features/main.yml

@@ -1,6 +1,6 @@
 name: <main>
 description: The `<main>` element represents the dominant content of a document. It is commonly used together with `<header>` and `<footer>`.
 spec: https://html.spec.whatwg.org/multipage/grouping-content.html#the-main-element
-group: html-elements
+group: landmark-elements
 # Note: <main> is part of https://caniuse.com/html5semantic but that feature
 # covers many unrelated elements and is therefore not linked here.

features/nav.yml

@@ -1,6 +1,6 @@
 name: <nav>
 description: The `<nav>` element represents a section of a page whose purpose is to provide navigation links, either within the current document or to other documents.
 spec: https://html.spec.whatwg.org/multipage/sections.html#the-nav-element
-group: html-elements
+group: landmark-elements
 # Note: <nav> is part of https://caniuse.com/html5semantic but that feature
 # covers many unrelated elements and is therefore not linked here.

features/section.yml

@@ -1,6 +1,6 @@
 name: <section>
 description: The `<section>` element is a generic standalone section of a document, which doesn't have a more specific semantic element to represent it.
 spec: https://html.spec.whatwg.org/multipage/sections.html#the-section-element
-group: html-elements
+group: landmark-elements
 # Note: <section> is part of https://caniuse.com/html5semantic but that feature
 # covers many unrelated elements and is therefore not linked here.

groups/landmark-elements.yml

@@ -0,0 +1,2 @@
+name: Landmark elements
+parent: html-elements