diff --git a/hwe/b_dipcenter.php b/hwe/b_dipcenter.php
index afd329f3..4f885ee9 100644
--- a/hwe/b_dipcenter.php
+++ b/hwe/b_dipcenter.php
@@ -64,6 +64,7 @@ var storedData = <?=Json::encode([
 <?=WebUtil::printJS('dist_js/vendors.js')?>
 <?=WebUtil::printJS('dist_js/dipcenter.js')?>
 <?=WebUtil::printCSS('../e_lib/bootstrap.min.css')?>
+<?=WebUtil::printCSS('../e_lib/summernote/summernote-bs4.css')?>
 <?=WebUtil::printCSS('dist_css/vendors.css')?>
 <?=WebUtil::printCSS('../d_shared/common.css')?>
 <?=WebUtil::printCSS('css/common.css')?>