set background color of floating divs

If a floating div is next to (and in front of) a div that takes up the
whole screen width, and has a background color set, that color can bleed
through into the floating div. One exampe of this is inline's blogpost
form. Avoid it by setting the background color of the floating element.

doc/bugs/sidebar_is_obscured_by_recentchanges.mdwn

@@ -9,6 +9,14 @@ For example, my wiki's [front](http://www.cse.unsw.edu.au/~cs3431/wiki/) and [ne
 
 to <code>local.css</code> to get the border and make sure that the RSS feed's grey title didn't show through on the news page.)
 
+> Hmm the background color setting seems like a change it makes sense to make to
+> style.css .. done.
+> --[[Joey]]
+
 Unfortunately, the [recentchanges](http://www.cse.unsw.edu.au/~cs3431/wiki/recentchanges/) page doesn't look so nice - the sidebar appears below the recentchanges list.
 
 I don't understand why the sidebar is appearing below the recentchanges inline, but above the news inline.
+
+> I don't see the problem here in firefox 3. The sidebar is at the top of
+> both pages. However, it might have to do with the recentchanges page
+> itself using floating elements to build up the table-like display. --[[Joey]]

doc/style.css

@@ -205,6 +205,8 @@ div.recentchanges {
 	margin-left: 40px;
 	margin-bottom: 40px;
 	padding: 2ex 2ex;
+	background: white;
+	color: black !important;
 }
 
 /* outlines */
@@ -272,6 +274,8 @@ input#openid_url {
 	margin-bottom: 1ex;
 	padding: 1ex 1ex;
 	border: 1px solid #aaa;
+	background: white;
+	color: black !important;
 }
 
 /* Provided for use by template plugin for floating note boxes. */
@@ -283,6 +287,8 @@ input#openid_url {
 	padding: 1ex 1ex;
 	border: 1px solid #aaa;
 	width: 25%
+	background: white;
+	color: black !important;
 }
 
 /* Used by the popup template and for backlinks hiding. */