Make callouts non-selectable

Author: dmlloyd

_sass/quarkus.scss

@@ -273,6 +273,15 @@ ul.dashed {
   }
 }
 
+b.conum {
+    -webkit-touch-callout: none;
+    -webkit-user-select: none;
+    -khtml-user-select: none;
+    -moz-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+}
+
 .hljs {
   display: inline;
   overflow: inherit;