parent bc nits

source

@@ -15456,9 +15456,8 @@ interface <dfn>HTMLStyleElement</dfn> : <span>HTMLElement</span> {
   <p>A <code>Document</code> <dfn>has a style sheet that is blocking scripts</dfn> if its
   <span>script-blocking style sheet counter</span> is greater than 0, or if that
   <code>Document</code> has a non-null <span data-x="concept-document-bc">browsing context</span>
-  that has a <span>parent browsing context</span>, and the <span>script-blocking style sheet
-  counter</span> of the <span>parent browsing context</span>'s <span>active document</span> is
-  greater than 0.</p>
+  whose <span data-x="bc-container-document">container document</span> is non-null and has a
+  <span>script-blocking style sheet counter</span> greater than 0.</p>
 
   <p>A <code>Document</code> <dfn>has no style sheet that is blocking scripts</dfn> if it does not
   <span data-x="has a style sheet that is blocking scripts">have a style sheet that is blocking
@@ -24758,7 +24757,7 @@ document.body.appendChild(wbr);</code></pre>
 
    <pre><code class="html" data-x="">&lt;a href=help.html target=example rel=noopener>Help!&lt;/a></code></pre>
 
-   <p>These are equivalent and only navigate the parent browsing context:</p>
+   <p>These are equivalent and only navigate the <span>parent browsing context</span>:</p>
 
    <pre><code class="html" data-x="">&lt;a href=index.html target=_parent>Home&lt;/a></code></pre>
    <pre><code class="html" data-x="">&lt;a href=index.html target=_parent rel=noopener>Home&lt;/a></code></pre>