Moving some html elements to the right group, and adding a feature to web-components

features/declarative-shadow-dom.yml

@@ -1,5 +1,7 @@
 name: Declarative shadow DOM
 description: The `shadowrootmode` attribute on `<template>` creates a shadow root without the use of JavaScript. It is a declarative alternative to the `attachShadow()` method.
 spec: https://html.spec.whatwg.org/multipage/scripting.html#attr-template-shadowrootmode
-group: html
+group:
+  - html
+  - web-components
 caniuse: declarative-shadow-dom

features/div.yml

@@ -1,7 +1,7 @@
 name: <div>
 description: The `<div>` HTML element is the generic container for content.
 spec: https://html.spec.whatwg.org/multipage/grouping-content.html#the-div-element
-group: html
+group: html-elements
 status:
   compute_from: html.elements.div
 compat_features:

features/header-footer.yml

@@ -3,7 +3,7 @@ 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
+group: html-elements
 compat_features:
   - html.elements.footer
   - html.elements.header

features/hr.yml

@@ -1,7 +1,7 @@
 name: <hr>
 description: The `<hr>` element represents a thematic break between paragraphs, often shown as a horizontal rule.
 spec: https://html.spec.whatwg.org/multipage/grouping-content.html#the-hr-element
-group: html
+group: html-elements
 compat_features:
   - api.HTMLHRElement
   - html.elements.hr

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
+group: html-elements
 compat_features:
   - html.elements.main

features/mark.yml

@@ -1,6 +1,6 @@
 name: <mark>
 description: The `<mark>` element represents text which is marked or highlighted for reference or notation purposes.
 spec: https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-mark-element
-group: html
+group: html-elements
 compat_features:
   - html.elements.mark

features/sub-sup.yml

@@ -3,7 +3,7 @@ description: The `<sub>` and `<sup>` elements sets inline text to be displayed a
 spec:
   - https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-sub-element
   - https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-sup-element
-group: html
+group: html-elements
 compat_features:
   - html.elements.sub
   - html.elements.sup