diff --git a/publication/publication.ptx b/publication/publication.ptx
index 20d3549..ddd5d97 100644
--- a/publication/publication.ptx
+++ b/publication/publication.ptx
@@ -12,7 +12,7 @@
 <publication>
   <common>
     <!-- Level at which are html files generated (chapter/section/etc): -->
-      <!--<chunking level="1" />-->
+      <!-- <chunking level="1" /> -->
 
     <!-- Depth for table of contents.  0 means no TOC -->
       <!--<tableofcontents level="1" />-->
@@ -112,7 +112,7 @@
       <!--<worksheet formatted="yes" />-->
   </latex>
 
-  <html>
+  <html embed-button="yes">
     <!-- A possible attribute for the html tag above is @short-answer-responses, with values either "always" or "graded".  As in: -->
     <!--<html short-answer-responses="always">-->
 
@@ -146,7 +146,8 @@
     <!-- override defaults.  Ex:<css theme="denver"/>          -->
     <!-- See also                                              -->
     <!-- https://pretextbook.org/doc/guide/html/publication-file-online.html#online-style-options -->
-      <!--<css theme="denver"/>-->
+      <css theme="boulder"/>
+      <!-- <css theme="salem"/> -->
 
     <!-- Search can be default or none, or you can use a Google-cx number to use google's search
     feature (but then variant should be set to none to avoid conflict) -->
