diff --git a/tpt_Header.go b/tpt_Header.go
index aed5c6b..9ef3903 100644
--- a/tpt_Header.go
+++ b/tpt_Header.go
@@ -13,6 +13,7 @@ func (this *App) ServePartial_Header(w http.ResponseWriter, slug string) {
 		<meta charset="UTF-8">
 		<title>`+hesc(this.cfg.AppTitle)+`</title>
 		<link rel="stylesheet" type="text/css" href="/style.css">
+		<meta viewport="width=device-width, initial-scale=1">
 	</head>
 	<body>
 		<h2>`+hesc(this.cfg.AppTitle)+`</h2>
