potential fix for missing colors

data/style.css

@@ -21,21 +21,21 @@
 .selected-section > .section-title {
     font: bold 18;
     color: white;
-    background: #009900;
+    background-color: #009900;
 }
 .section-title {
     font: bold 18;
     color: white;
-    background: #999999;
+    background-color: #999999;
 }
 
 .section-body {
-    background: white;
+    background-color: white;
     margin: 20px;
 }
 
 .selected-section {
-    background: #eeffee;
+    background-color: #eeffee;
     margin: 20px;
 }