Improve option group styling. refs #1679

@@ -1410,6 +1410,10 @@ h6.fieldset-heading {
     color: rgb(33, 117, 155);
 }
 
+.option-groups-region .accordion-content .field-option-description {
+    margin-left: 16px;
+}
+
 .dragged {
     position: absolute;
     opacity:  0.5;