spec/css3-background: edited

Author: fantasai

spec/css3-background.txt

@@ -103,11 +103,16 @@ http://lists.w3.org/Archives/Public/www-style/2006May/0120.html
   ;Resolution : Already fixed. :)
   ;Status : Closed.
 
+
 ==== Issue 12 ====
 
   ;URL : http://lists.w3.org/Archives/Public/www-style/2007Nov/0105.html
   ;Summary : Background-position should allow positioning from corners other than top left
   ;Status : Needs proposed text
 
+==== Issue 13 ====
 
 
+  ;URL : http://lists.w3.org/Archives/Public/www-style/2007Dec/0011.html
+  ;Summary : Background-position should have a figure for percentage positioning
+  ;Status : Needs proposed image/text