diff --git a/src/public/app/widgets/ribbon_widgets/classic_editor_toolbar.js b/src/public/app/widgets/ribbon_widgets/classic_editor_toolbar.js
index 34e3fb7e1..2cf5f4671 100644
--- a/src/public/app/widgets/ribbon_widgets/classic_editor_toolbar.js
+++ b/src/public/app/widgets/ribbon_widgets/classic_editor_toolbar.js
@@ -4,6 +4,17 @@ const TPL = `\
 <div class="classic-toolbar-widget">
     Classic toolbar goes here.
 </div>
+
+<style>
+    .classic-toolbar-widget {
+        --ck-color-toolbar-background: transparent;
+        --ck-color-button-default-background: transparent;
+    }
+
+    .classic-toolbar-widget .ck.ck-toolbar {
+        border: none;
+    }
+</style>
 `;
 
 export default class ClassicEditorToolbar extends NoteContextAwareWidget {