[css-fonts] Replaced <length> | <percentage> by <length-percentage> (#265)

Author: SebastianZ

css-fonts/Fonts.src.html

@@ -863,7 +863,7 @@ <h3 id="font-size-prop">Font size: the <a href="#propdef-font-size">font-size</a
     </tr>
     <tr>
       <td>Value:</td>
-      <td><var>&lt;absolute-size&gt;</var> | <var>&lt;relative-size&gt;</var> | <var>&lt;length&gt;</var> | <var>&lt;percentage&gt;</var></td>
+      <td><var>&lt;absolute-size&gt;</var> | <var>&lt;relative-size&gt;</var> | <var>&lt;length-percentage&gt;</var></td>
     </tr>
     <tr>
       <td>Initial:</td>
@@ -928,12 +928,11 @@ <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 id="length-size-value"><var>&lt;length&gt;</var></dfn>
-    <dd>A length value specifies an absolute font size
+    <dt><dfn id="length-percentage-size-value"><var>&lt;length-percentage&gt;</var></dfn>
+    <dd><p>A length value specifies an absolute font size
         (independent of the user agent's font table).
         Negative lengths are invalid.
-    <dt><dfn id="percentage-size-value"><var>&lt;percentage&gt;</var></dfn>
-    <dd>A percentage value specifies an absolute font size relative
+    <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.
       Negative percentages are invalid.

css-fonts/Overview-wip.bs

@@ -688,7 +688,7 @@ faces when implementing support for <em>system font fallback</em>.
 <h3 id="font-size-prop">Font size: the 'font-size' property</h3>
 <pre class="propdef">
 Name: font-size
-Value: <<absolute-size>> | <<relative-size>> | <<length>> | <<percentage>>
+Value: <<absolute-size>> | <<relative-size>> | <<length-percentage>>
 Initial: medium
 Applies to: all elements
 Inherited: yes
@@ -734,15 +734,14 @@ are:
 	agent may have to extrapolate table values if the numerical value
 	goes beyond the keywords.
 
-	<dt><dfn><<length>></dfn>
+	<dt><dfn><<length-percentage>></dfn>
 	<dd>A length value specifies an absolute font size
 			(independent of the user agent's font table).
 			Negative lengths are illegal.
 
-	<dt><dfn><<percentage>></dfn>
-	<dd>A percentage value specifies an absolute font size relative
+      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 ''em''s, leads to more robust and cascadable style sheets.
 </dl>
 
 The following table provides user agent guidelines for the