[css-flexbox-1] [css-grid-2] [css-ruby-1] Flag "New values" tables for display property as informative (#7242)

Author: tidoust

css-flexbox-1/Overview.bs

@@ -539,10 +539,12 @@ Flex Layout Box Model and Terminology</h2>
 <h2 id='flex-containers'>
 Flex Containers: the ''flex'' and ''inline-flex'' 'display' values</h2>
 
-	<pre class="propdef partial">
-	Name: display
-	New values: flex | inline-flex
-	</pre>
+	<div class="informative">
+		<pre class="propdef partial">
+		Name: display
+		New values: flex | inline-flex
+		</pre>
+	</div>
 
 	<dl dfn-type=value dfn-for=display>
 		<dt><dfn>flex</dfn>

css-grid-2/Overview.bs

@@ -895,10 +895,12 @@ Grid Containers</h2>
 <h3 id='grid-containers'>
 Establishing Grid Containers: the ''display/grid'' and ''inline-grid'' 'display' values</h3>
 
-	<pre class="propdef partial">
-	Name: display
-	New values: grid | inline-grid
-	</pre>
+	<div class="informative">
+		<pre class="propdef partial">
+		Name: display
+		New values: grid | inline-grid
+		</pre>
+	</div>
 
 	<dl dfn-for="display" dfn-type=value>
 		<dt><dfn>grid</dfn>

css-ruby-1/Overview.bs

@@ -204,10 +204,12 @@ Ruby-specific 'display' Values</h3>
 	authors must map document language elements to ruby elements;
 	this is done with the 'display' property.
 
-	<pre class=propdef partial>
-	Name: display
-	New values: ruby | ruby-base | ruby-text | ruby-base-container | ruby-text-container
-	</pre>
+	<div class="informative">
+		<pre class=propdef partial>
+		Name: display
+		New values: ruby | ruby-base | ruby-text | ruby-base-container | ruby-text-container
+		</pre>
+	</div>
 
 	The following new 'display' values assign ruby layout roles to an arbitrary element: