[css-fonts-3] Help with w3c#2803

Author: svgeesus

css-fonts-3/Fonts.src.html

@@ -926,13 +926,15 @@ <h3 id="font-size-prop">Font size: the <a href="#propdef-font-size">font-size</a
     agent may have to extrapolate table values if the numerical value
     goes beyond the keywords.
 
-    <dt><dfn data-dfn-type=value data-dfn-for=font-size id="length-percentage-size-value"><var>&lt;length-percentage&gt;</var></dfn>
-    <dd><p>A length value specifies an absolute font size
+    <dt><a href="https://drafts.csswg.org/css-values-4/#typedef-length-percentage"
+      id="length-percentage-size-value"><var>&lt;length-percentage&gt;</var></a>
+    <dd><p>A length value [[!CSS-VALUES-4]] specifies an absolute font size
         (independent of the user agent's font table).
         Negative lengths are invalid.
     <p>A percentage value specifies an absolute font size relative
         to the parent element's font size. Use of percentage values, or
-	  values in 'em's, leads to more robust and cascadable style sheets.
+    values in <a class="css" data-link-type="maybe" href="https://drafts.csswg.org/css-values-4/#em" id="ref-for-em">em</a>s,
+    leads to more robust and cascadable style sheets.
       Negative percentages are invalid.
   </dl>