diff --git a/app/index.html b/app/index.html
index 7324756..f19104c 100644
--- a/app/index.html
+++ b/app/index.html
@@ -18,12 +18,12 @@
 		<link rel="icon" type="image/png" href="favicon.png" />
 	</head>
 	<body class="d-flex h-100 text-bg-dark">
-		<div class="cover-container d-flex w-100 h-100 p-3 mx-auto flex-column">
+		<div class="cover-container d-flex w-100 h-100 mx-auto flex-column">
 			<!-- app header -->
 			<include src="app/partitial/header.html"></include>
 
 			<!-- app working window -->
-			<main>
+			<main class="p-0 p-md-3">
 				<div class="d-block d-xs-block d-md-flex gap-3">
 					<include src="app/partitial/menu.html"></include>
 					<div class="flex-fill card shadow p-3" id="content"></div>
diff --git a/app/partitial/header.html b/app/partitial/header.html
index 9f7194b..762df34 100644
--- a/app/partitial/header.html
+++ b/app/partitial/header.html
@@ -1,4 +1,4 @@
-<header class="mb-3">
+<header class="m-3 mb-3 mb-md-0">
 	<div class="text-shadow">
 		<h3 id="app_title" class="float-md-start mb-0">
 			<span class="font-monospace">inet://</span><br />
