Fix leaderboard subheading

openassessment/xblock/static/sass/oa/utilities/_shame.scss

@@ -71,7 +71,16 @@
     line-height: 0;
   }
 
-
+  // submission answer leaderboard fix (TNL-4009). 4 class selectors is more specific than
+  // lms/static/sass/course/courseware/_courseware.scss#L453 in edx-platform (3 class selectors)
+  .leaderboard__answer .submission__answer__display__content {
+    h2.submission__answer__part__text__title {
+      @include text-align(left);
+      @include float(none);
+      font-size: inherit;
+      margin: 0;
+    }
+  }
 
   .list--actions {
     list-style: none !important;

openassessment/xblock/static/sass/oa/views/_oa-base.scss

@@ -500,6 +500,10 @@
     }
   }
 
+  .submission__answer__part__text__title {
+    @extend %t-subheading;
+  }
+
   div.submission__answer__part__text__value {
     border: 1px solid $color-decorative-secondary;
     background-color: $white-t;