[css-values-4][editorial] Fix changes list.

Author: fantasai

css-values-4/Overview.bs

@@ -5196,12 +5196,19 @@ Recent Changes</h3>
 
 	<ul>
 		<li>Fixed the inverted assignment of [=viewport-percentage length=] behaviors
-		to types of interface changes (A vs. B).
-	</ul>
-
-	Substantial since <a href="https://www.w3.org/TR/2021/WD-css-values-4-20210930/">30 September 2021 WD</a>:
-
-	<ul>
+			to types of interface changes (A vs. B).
+			<blockquote>
+				<ul>
+				<li>Changes in interface that happen as a result of scrolling
+					or other frequent page interactions that would disturb the user
+					if they resulted in substantial layout changes
+					must be categorized as the <del>former (A)</del> <ins>latter (B)</ins>.
+				<li>Changes in interface that have a sufficiently steady state
+					that re-laying out the document into the adjusted space
+					would be beneficial to the user
+					must be categorized as the <del>latter (B)</del> <ins>former (A)</ins>.
+				</ul>
+			</blockquote>
 		<li>Defined minimum number of ''calc()'' terms, arguments, and nesting as 32.
 			(<a href="https://github.com/w3c/csswg-drafts/issues/3462">Issue 3462</a>)
 		<li>Defined that ''mod(-0, infinity)'' returns ''NaN''.