Styling membership buttons.

css/style.css

@@ -571,7 +571,9 @@ img {
     margin: 0 10px 10px 0;
 }
 
-/* Bootstrap preparations. */
+/**
+ * Bootstrap preparations.
+ **/
 .list-item {
     display:block;
 }
@@ -630,6 +632,11 @@ img {
     background-color: #FFF;
     border-color: #CCC;
 }
+.btn-primary {
+    color: #FFF;
+    background-color: #428BCA;
+    border-color: #357EBD;
+}
 
 /******************************
  * Styles for inividual pages *