diff --git a/header.php b/header.php
index a83c478..3a35add 100644
--- a/header.php
+++ b/header.php
@@ -3,5 +3,10 @@
 <head>
     <meta charset="UTF-8">
     <title>Smart House</title>
+    <style>
+        body { font-family: Arial, sans-serif; margin: 20px; }
+        nav a { margin-right: 10px; }
+        hr { margin: 10px 0; }
+    </style>
 </head>
 <body>
\ No newline at end of file
