diff --git a/src/template/web.chat.header/theme/black.css b/src/template/web.chat.header/theme/black.css
index 89ceec5a..0b4b8719 100644
--- a/src/template/web.chat.header/theme/black.css
+++ b/src/template/web.chat.header/theme/black.css
@@ -5,3 +5,9 @@ body.black {
 	--box-border:darkcyan solid 1px;
 	--code-bg-color:var(--plugin-bg-color);
 }
+html.login body.black fieldset.Header {
+	background-color:transparent;
+}
+html.login body.black fieldset.Footer {
+	background-color:transparent;
+}