[css-scrollbars] Editorial tweaks

Author: frivoal

css-scrollbars-1/Overview.bs

@@ -186,11 +186,12 @@ Applies to: [=scroll containers=]
 Percentages: n/a
 </pre>
 
-This property allows the author to set the maximum thickness of an element’s scrollbars when they are shown.
+This property allows the author to specify
+the desired thickness of an element’s scrollbars.
 
 <dl dfn-type="value" dfn-for=scrollbar-width>
 <dt><dfn>auto</dfn></dt>
-<dd>implementations must use the default platform scrollbar width.
+<dd>Implementations must use the default platform scrollbar width.
 </dd>
 <dt><dfn>thin</dfn></dt>
 <dd>Implementations should use thinner scrollbars than ''scrollbar-width/auto'' when applicable.
@@ -206,7 +207,7 @@ In that case, implementations may treat this value as ''scrollbar-width/auto''.
 </dd>
 </dl>
 
-UAs must apply the scrollbar-width value set on the root element to the viewport.
+UAs must apply the 'scrollbar-width' value set on the root element to the viewport.
 
 UAs should enforce a minimum actual size of scrollbar width per 
 <a href="https://www.w3.org/TR/WCAG21/#target-size">WCAG 2.1 SC 2.5.5 Target Size</a>