revised text on computed value of 'column-width'

Author: howcom

css3-multicol/Overview.src.html

@@ -577,7 +577,7 @@ <h3 id='cw'>'column-width'</h3>
       <td>visual
     <tr>
       <td><em>Computed&nbsp;value:</em>
-      <td>the absolute length
+      <td>the absolute length, zero or larger
 </table>
 
 <p>This property describes the width of columns in multicol elements.
@@ -593,7 +593,7 @@ <h3 id='cw'>'column-width'</h3>
 
 <dd>describes the optimal column width. The actual column width may be
 wider (to fill the available space), or narrower (only if the
-available space is smaller than the specified column width). Values
+available space is smaller than the specified column width). Specified values
 must be greater than 0.
 
 </dl>