Fix: spacing around question titles/text in Firefox

problem_builder/public/css/mentoring.css

@@ -40,12 +40,13 @@
     font-style: italic;
 }
 
-.mentoring h4 {
-    margin-bottom: 20px;
+.mentoring fieldset {
+    margin-top: 10px;
 }
 
-.mentoring h4 {
-    margin-top: 25px;
+.mentoring h3 {
+    margin-top: 0px;
+    margin-bottom: 7px;
 }
 
 .mentoring .submit {
@@ -62,6 +63,10 @@
     display: table; /* Enable line-wrapping in IE8 */
 }
 
+.mentoring .choices legend.question p:last-child { /* Selector must be more specific than 'div.course-wrapper section.course-content p' */
+    margin-bottom: 0;
+}
+
 .mentoring .attempts {
     margin-left: 10px;
     display: inline-block;