Index: lams_tool_larsrc/web/includes/javascript/rsrcembed.js
===================================================================
diff -u -rb9b05df2a560abfd0f93353515e277abc52764ba -rbc8213e12c4e5afddd0394ad66386ef3e70d1611
--- lams_tool_larsrc/web/includes/javascript/rsrcembed.js	(.../rsrcembed.js)	(revision b9b05df2a560abfd0f93353515e277abc52764ba)
+++ lams_tool_larsrc/web/includes/javascript/rsrcembed.js	(.../rsrcembed.js)	(revision bc8213e12c4e5afddd0394ad66386ef3e70d1611)
@@ -1,7 +1,7 @@
 function iframelyCallback(itemUid, response) {
 	let panel = $('#item-content-' + itemUid);
 	if (!response) {
-		 $('.embedded-open-button', panel).removeClass('btn-default btn-sm pull-right').addClass('btn-primary');
+		 $('.embedded-open-button', panel).removeClass('btn-secondary btn-sm float-end').addClass('btn-primary');
 		return;
 	}