style: add border on focused post

src/discussions/post-comments/PostCommentsView.jsx

@@ -99,7 +99,7 @@ function PostCommentsView({ intl }) {
         )
       )}
       <div
-        className="discussion-comments d-flex flex-column card border-0 post-card-margin post-card-padding"
+        className="discussion-comments d-flex flex-column card border-0 post-card-margin post-card-padding on-focus"
       >
         <Post post={thread} handleAddResponseButton={() => setAddingResponse(true)} />
         {!thread.closed && (

src/discussions/post-comments/comments/comment/Comment.jsx

@@ -119,7 +119,7 @@ function Comment({
           />
         )}
         <EndorsedAlertBanner postType={postType} content={comment} />
-        <div className="d-flex flex-column post-card-comment px-4 pt-3.5 pb-10px" aria-level={5}>
+        <div className="d-flex flex-column post-card-comment px-4 pt-3.5 pb-10px" tabIndex="0">
           <HoverCard
             commentOrPost={comment}
             actionHandlers={actionHandlers}

src/discussions/posts/post/Post.jsx

@@ -90,8 +90,9 @@ function Post({
   return (
     <div
       className="d-flex flex-column w-100 mw-100 post-card-comment"
-      aria-level={5}
       data-testid={`post-${post.id}`}
+      // eslint-disable-next-line jsx-a11y/no-noninteractive-tabindex
+      tabIndex="0"
     >
       <Confirmation
         isOpen={isDeleting}

src/index.scss

@@ -433,7 +433,7 @@ header {
   pointer-events: none;
 }
 
-.on-focus:focus-visible {
+.on-focus:focus-within {
   outline: 2px solid black;
 }
 
@@ -442,6 +442,8 @@ header {
 }
 
 .post-card-comment {
+  outline: none;
+
   &:not(:hover),
   &:not(:focus) {
     .hover-card {
@@ -450,7 +452,7 @@ header {
   }
 
   &:hover,
-  &:focus {
+  &:focus-within {
     .hover-card {
       display: flex;
     }