diff --git a/SQL/sql3.php b/SQL/sql3.php
index 42dd466..59283ae 100644
--- a/SQL/sql3.php
+++ b/SQL/sql3.php
@@ -6,12 +6,19 @@
 </head>
 <body>
 
+	<div style="background-color:#c9c9c9;padding:15px;">
+      <button type="button" name="homeButton" onclick="location.href='../homepage.html';">Home Page</button>
+      <button type="button" name="mainButton" onclick="location.href='sqlmainpage.html';">Main Page</button>
+	</div>
+
+	<div align="center">
 	<form action="<?php $_SERVER['PHP_SELF']; ?>" method="post" >
 		<p>Give me book's number and I give you book's name in my library.</p>
 		Book's number : <input type="text" name="number">
-		<input type="submit" name="submit" value="Submit">
+		<input type="submit" name="submit">
 		<!-- <p>//Is this same with the level 2?</p>-->
 	</form>
+	</div>
 
 <?php
 	$servername = "localhost";
