Index: openacs-4/packages/xowiki/tcl/link-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/link-procs.tcl,v
diff -u -N -r1.106.2.16 -r1.106.2.17
--- openacs-4/packages/xowiki/tcl/link-procs.tcl	30 Mar 2021 09:01:21 -0000	1.106.2.16
+++ openacs-4/packages/xowiki/tcl/link-procs.tcl	2 Sep 2021 13:24:28 -0000	1.106.2.17
@@ -262,7 +262,7 @@
         $content
       </div>
       <div class="modal-footer">
-        <button type="button" class="btn btn-default" data-dismiss="modal">#acs-kernel.common_Close#</button>
+        <button type="button" class="btn [::xowiki::CSS class btn-default]" data-dismiss="modal">#acs-kernel.common_Close#</button>
       </div>
     </div><!-- /.modal-content -->
   </div><!-- /.modal-dialog -->
@@ -286,7 +286,7 @@
         $content
       </div>
       <div class="modal-footer">
-        <button type="button" class="btn btn-default" data-dismiss="modal">#acs-kernel.common_Close#</button>
+        <button type="button" class="btn [::xowiki::CSS class btn-default]" data-dismiss="modal">#acs-kernel.common_Close#</button>
       </div>
     </div><!-- /.modal-content -->
   </div><!-- /.modal-dialog -->