more more styling to the CSS
diff --git a/Doc/html/style.css b/Doc/html/style.css
index f7a19df..2e210b1 100644
--- a/Doc/html/style.css
+++ b/Doc/html/style.css
@@ -141,7 +141,8 @@
                           border: thin solid black;
                           padding: 0pt 1em 4pt 1em; }
 
-.seealso .heading       { font-size: 110%; }
+.seealso > .heading     { font-size: 110%;
+                          font-weight: bold; }
 
 /*
  * Class 'availability' is used for module availability statements at