Add an entry for CSS Anchor Positioning

activities.json

@@ -1373,6 +1373,18 @@
     "title": "Relative color syntax (CSS Color Module Level 5)",
     "url": "https://drafts.csswg.org/css-color-5/#relative-colors"
   },
+  {
+    "ciuName": "css-anchor-positioning",
+    "description": "Anchor Positioning allows positioned elements to size and position themselves relative to one or more 'anchor elements' elsewhere on the page.",
+    "id": "css-anchor-positioning",
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=css-anchor-position-1",
+    "mozPosition": "positive",
+    "mozPositionDetail": "This is an important evolution of absolute positioning that addresses a common and much requested authoring usecase that otherwise requires the use of JavaScript.",
+    "mozPositionIssue": 794,
+    "org": "W3C",
+    "title": "CSS Anchor Positioning",
+    "url": "https://drafts.csswg.org/css-anchor-position-1/"
+  },
   {
     "ciuName": null,
     "description": "A TC39 proposal to add an .at() method to all the basic indexable classes (Array, String, TypedArray) which allows relative indexing of collection.",