diff --git a/src/frontend/client/src/style.css b/src/frontend/client/src/style.css
index af4da4b0a..0d78a1d16 100644
--- a/src/frontend/client/src/style.css
+++ b/src/frontend/client/src/style.css
@@ -2828,11 +2828,11 @@ button.scroll-convo {
 }
 
 .linsight-vditor .vditor-wysiwyg>.vditor-reset>h1:before,
-.vditor-wysiwyg>.vditor-reset>h2:before,
-.vditor-wysiwyg>.vditor-reset>h3:before,
-.vditor-wysiwyg>.vditor-reset>h4:before,
-.vditor-wysiwyg>.vditor-reset>h5:before,
-.vditor-wysiwyg>.vditor-reset>h6:before,
+.linsight-vditor .vditor-wysiwyg>.vditor-reset>h2:before,
+.linsight-vditor .vditor-wysiwyg>.vditor-reset>h3:before,
+.linsight-vditor .vditor-wysiwyg>.vditor-reset>h4:before,
+.linsight-vditor .vditor-wysiwyg>.vditor-reset>h5:before,
+.linsight-vditor .vditor-wysiwyg>.vditor-reset>h6:before,
 .vditor-wysiwyg div.vditor-wysiwyg__block:before,
 .vditor-wysiwyg div[data-type="link-ref-defs-block"]:before,
 .vditor-wysiwyg div[data-type="footnotes-block"]:before,
diff --git a/src/frontend/platform/src/App.css b/src/frontend/platform/src/App.css
index d6ede6644..06d250116 100644
--- a/src/frontend/platform/src/App.css
+++ b/src/frontend/platform/src/App.css
@@ -305,11 +305,11 @@
 	opacity: 0.8;
 }
 .linsight-vditor .vditor-wysiwyg>.vditor-reset>h1:before,
-.vditor-wysiwyg>.vditor-reset>h2:before,
-.vditor-wysiwyg>.vditor-reset>h3:before,
-.vditor-wysiwyg>.vditor-reset>h4:before,
-.vditor-wysiwyg>.vditor-reset>h5:before,
-.vditor-wysiwyg>.vditor-reset>h6:before,
+.linsight-vditor .vditor-wysiwyg>.vditor-reset>h2:before,
+.linsight-vditor .vditor-wysiwyg>.vditor-reset>h3:before,
+.linsight-vditor .vditor-wysiwyg>.vditor-reset>h4:before,
+.linsight-vditor .vditor-wysiwyg>.vditor-reset>h5:before,
+.linsight-vditor .vditor-wysiwyg>.vditor-reset>h6:before,
 .vditor-wysiwyg div.vditor-wysiwyg__block:before,
 .vditor-wysiwyg div[data-type="link-ref-defs-block"]:before,
 .vditor-wysiwyg div[data-type="footnotes-block"]:before,