Index: openacs-4/packages/openacs-bootstrap5-theme/resources/masters/plain-master.adp
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/openacs-bootstrap5-theme/resources/masters/plain-master.adp,v
diff -u -r1.1.2.7 -r1.1.2.8
--- openacs-4/packages/openacs-bootstrap5-theme/resources/masters/plain-master.adp	27 Apr 2022 16:37:23 -0000	1.1.2.7
+++ openacs-4/packages/openacs-bootstrap5-theme/resources/masters/plain-master.adp	23 Jun 2022 08:29:45 -0000	1.1.2.8
@@ -25,7 +25,7 @@
         <div id="bootstrap5-alert-message">
             <multiple name="user_messages">
                 <div class="alert alert-success">
-		    <a class="close" data-bs-dismiss="alert">×</a>
+		    <a class="btn-close" data-bs-dismiss="alert">×</a>
 		    <i class="bi bi-info-square-fill"></i>
                     @user_messages.message;noquote@
                 </div>