put Value Definitions back in the right place

Author: davidsgrogan

css-fonts-5/Overview.bs

@@ -60,6 +60,19 @@ rules defined in CSS Fonts Level 4.
 This specification is currently a delta to the CSS Fonts Level 4 specification.
 Do not assume that if something is not here, it has been dropped.
 
+<h3 id="values">
+Value Definitions</h3>
+
+This specification follows the <a href="https://www.w3.org/TR/CSS2/about.html#property-defs">CSS property definition conventions</a> from [[!CSS2]]
+using the <a href="https://www.w3.org/TR/css-values-3/#value-defs">value definition syntax</a> from [[!CSS-VALUES-3]].
+Value types not defined in this specification are defined in CSS Values &amp; Units [[!CSS-VALUES-3]].
+Combination with other CSS modules may expand the definitions of these value types.
+
+In addition to the property-specific values listed in their definitions,
+all properties defined in this specification
+also accept the <a>CSS-wide keywords</a> as their property value.
+For readability they have not been repeated explicitly.
+
 <h2 id="text-scale-meta">
 Text-Scale <code class=html>&lt;meta&gt;</code> element</h2>
 
@@ -174,19 +187,6 @@ Note: Authors are expected to use
 	</pre>
 </div>
 
-<h3 id="values">
-Value Definitions</h3>
-
-This specification follows the <a href="https://www.w3.org/TR/CSS2/about.html#property-defs">CSS property definition conventions</a> from [[!CSS2]]
-using the <a href="https://www.w3.org/TR/css-values-3/#value-defs">value definition syntax</a> from [[!CSS-VALUES-3]].
-Value types not defined in this specification are defined in CSS Values &amp; Units [[!CSS-VALUES-3]].
-Combination with other CSS modules may expand the definitions of these value types.
-
-In addition to the property-specific values listed in their definitions,
-all properties defined in this specification
-also accept the <a>CSS-wide keywords</a> as their property value.
-For readability they have not been repeated explicitly.
-
 <h2 id="basic-font-props">
 Basic Font Properties</h2>