diff --git a/Admin/admin_page.php b/Admin/admin_page.php
index 93930dfab6fafd066899321c90508b5379d1364c..a72a169c25770732021eddbf4fd502288d2317b9 100644
--- a/Admin/admin_page.php
+++ b/Admin/admin_page.php
@@ -13,8 +13,9 @@ if (!isset($_SESSION['user_type'])) {
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>管理员管理页面</title>
+    <title>Admin Page</title>
     <link href="https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css" rel="stylesheet">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/all.min.css">
 </head>
 <body class="bg-gray-100">
 <div class="flex h-screen">
@@ -29,15 +30,24 @@ if (!isset($_SESSION['user_type'])) {
         </ul>
     </div>
     <!-- 主内容区 -->
-    <div class="flex-1">
+    <div class="flex-1 items-center justify-center">
         <iframe id="mainContent" class="w-full h-full overflow-auto" src="about:blank"></iframe>
     </div>
 </div>
+
+<div class="fixed bottom-0 left-0 p-4">
+    <a href="http://localhost/zhushou/Presentation/interface.php" id="return-home-btn" class="inline-block bg-black p-4 rounded-md">
+        <i class="fas fa-arrow-left text-white text-xl"></i>
+    </a>
+</div>
+
 <script>
     document.querySelectorAll('a').forEach(link => {
         link.addEventListener('click', function(event) {
-            event.preventDefault();
-            document.getElementById('mainContent').src = this.getAttribute('data-src');
+            if (this.hasAttribute('data-src')) {
+                event.preventDefault();
+                document.getElementById('mainContent').src = this.getAttribute('data-src');
+            }
         });
     });
 </script>
diff --git a/Admin/brs_manage.php b/Admin/brs_manage.php
index eb6391346d3dd88ecdc7568f78764129bb15e795..97b32d363be04a3998e2dea4559b8fe0e5661d63 100644
--- a/Admin/brs_manage.php
+++ b/Admin/brs_manage.php
@@ -248,7 +248,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
         addButtons.forEach(button => {
             button.addEventListener('click', function () {
                 modalContent.innerHTML = `
-            <h2 class="text-lg font-bold mb-4">Edit Building Info</h2>
+            <h2 class="text-lg font-bold mb-4">Add Building</h2>
         <form id="addBuildingForm" class="space-y-4" action="../Admin/brs_manage.php" method="post">
             <input type="hidden" name="formType" value="addBuildingForm">
             <div class="flex">
@@ -275,11 +275,11 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
                     </div>
                     <div>
                         <label class="block text-sm font-medium text-gray-700" for="latitude">Latitude</label>
-                        <input type="text" name="latitude" id="latitude" class="mt-1 block w-full px-3 py-2 bg-white border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500">
+                        <input type="text" name="latitude" id="latitude" class="mt-1 block w-full px-3 py-2 bg-white border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500" required>
                     </div>
                     <div>
                         <label class="block text-sm font-medium text-gray-700" for="longitude">Longitude</label>
-                        <input type="text" name="longitude" id="longitude" class="mt-1 block w-full px-3 py-2 bg-white border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500">
+                        <input type="text" name="longitude" id="longitude" class="mt-1 block w-full px-3 py-2 bg-white border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500" required>
                     </div>
                     <div>
                         <label class="block text-sm font-medium text-gray-700" for="address">Address</label>
diff --git a/Logic/responses.php b/Logic/responses.php
deleted file mode 100644
index 15aad7efca576dc0b099c9158c013073e1510407..0000000000000000000000000000000000000000
--- a/Logic/responses.php
+++ /dev/null
@@ -1,8 +0,0 @@
-<?php
-//\b来指定单词边界,确保只匹配整个单词,而不是字符串中的子字符串
-//i修饰符使得匹配不区分大小写
-return [
-    '/\b(体育中心|UWE)\b/i' => 'UWE的体育中心提供了多种体育和健身设施,包括健身房,多功能球场,壁球场,攀岩,并且开设多种课程:瑜伽,篮球,拳击等...',
-    '/\b(bye|farewell|goodbye)\b/i' => 'Goodbye! Looking forward to our next conversation!',
-    // 其他预定义的回答
-];
diff --git a/Presentation/chatPage.php b/Presentation/chatPage.php
index 9130feced458952c0d13b3ea252737b90a99a934..495fc303546a534678f3d6705cb98525ed35b2c2 100644
--- a/Presentation/chatPage.php
+++ b/Presentation/chatPage.php
@@ -27,7 +27,7 @@
     </div>
 </div>
 
-<a href="interface.php" id="return-home-btn"><i class="fas fa-arrow-left"></i></a>
+<!--<a href="interface.php" id="return-home-btn"><i class="fas fa-arrow-left"></i></a>-->
 
 <script src="../Logic/chat.js"></script>
 </body>
diff --git a/Presentation/city.php b/Presentation/city.php
index 52b8aaab93a9cd743bb968feb35da8c94b10ff41..54ba70a77be78f95a7778b775b6ed232af4b8098 100644
--- a/Presentation/city.php
+++ b/Presentation/city.php
@@ -106,7 +106,7 @@ $buildings = $stmt->fetchAll(PDO::FETCH_ASSOC);
 </div>
 
 
-<a href="interface.php" id="return-home-btn"><i class="fas fa-arrow-left"></i></a>
+<!--<a href="interface.php" id="return-home-btn"><i class="fas fa-arrow-left"></i></a>-->
 
 <script src="../Logic/city.js"></script>
 </body>
diff --git a/Presentation/interface.php b/Presentation/interface.php
index cf90c96d12321084d0fc20ae112f7b92816b2162..6603b68c6ce92d43ce508d3dbfba871ec82fe2eb 100644
--- a/Presentation/interface.php
+++ b/Presentation/interface.php
@@ -7,6 +7,7 @@
     <title>Chat Interface with Aligned Messages</title>
     <link href="https://fonts.googleapis.com/css2?family=Roboto:wght@400;500&display=swap" rel="stylesheet">
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/all.min.css">
+    <link href="https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css" rel="stylesheet">
     <link rel="stylesheet" href="../css/interface.css">
 </head>
 <body>
@@ -19,10 +20,10 @@
     </div>
 
     <div id="sidebar">
-        <a href="map.php" class="sidebar-item" target="contentFrame">Around Frenchay Campus</a>
-        <a href="city.php" class="sidebar-item" target="contentFrame">Around Bristol</a>
-        <a href="chatPage.php" class="sidebar-item" target="contentFrame">Campus Voices</a>
-        <a href="settings.php" class="sidebar-item" target="contentFrame"><i class="fas fa-home"></i> User Profile</a>
+        <a href="#" class="sidebar-item" target="contentFrame" data-src="map.php">Around Frenchay Campus</a>
+        <a href="#" class="sidebar-item" target="contentFrame" data-src="city.php">Around Bristol</a>
+        <a href="#" class="sidebar-item" target="contentFrame" data-src="chatPage.php">Campus Voices</a>
+        <a href="#" class="sidebar-item" target="contentFrame" data-src="settings.php">User Profile</a>
         <?php
         if (isset($userType) && $userType === 'admin') {
             echo '<a href="../Admin/admin_page.php" class="sidebar-item" target="contentFrame">Admin Page</a>';
@@ -36,5 +37,15 @@
 
 </div>
 
+<script>
+    document.querySelectorAll('a').forEach(link => {
+        link.addEventListener('click', function(event) {
+            if (this.hasAttribute('data-src')) {
+                event.preventDefault();
+                document.getElementById('contentFrame').src = this.getAttribute('data-src');
+            }
+        });
+    });
+</script>
 </body>
 </html>
diff --git a/Presentation/map.php b/Presentation/map.php
index cd1836b0135b6ebc8dd5a10f9b4152255febd22d..531e339882bf42ddfafff5ab2cd01f2bdd59731f 100644
--- a/Presentation/map.php
+++ b/Presentation/map.php
@@ -37,7 +37,7 @@ $buildings = $stmt->fetchAll(PDO::FETCH_ASSOC);
 
 <div id="place-info"></div>
 
-<a href="interface.php" id="return-home-btn"><i class="fas fa-arrow-left"></i></a>
+<!--<a href="interface.php" id="return-home-btn"><i class="fas fa-arrow-left"></i></a>-->
 
 <script src="../Logic/map.js"></script>
 </body>
diff --git a/Presentation/settings.php b/Presentation/settings.php
index f83c8ed560e3ddb87292a13835b8e1324cc16cab..d3785ccc28e79567cf6e04afe93022023b9e4cfc 100644
--- a/Presentation/settings.php
+++ b/Presentation/settings.php
@@ -177,9 +177,6 @@ $user = $stmt->fetch(PDO::FETCH_ASSOC);
         <!--    </form>再加一个模态框来确定用户是否退出账号-->
 </div>
 
-
-<a href="interface.php" id="return-home-btn"><i class="fas fa-arrow-left"></i></a>
-
 <!--src="js/settings.js"-->
 <script src="../Logic/settings.js"></script>
 </body>