diff --git a/src/main/java/org/casbin/Application.java b/src/main/java/org/casbin/Application.java
index c8137f6..9abdd52 100644
--- a/src/main/java/org/casbin/Application.java
+++ b/src/main/java/org/casbin/Application.java
@@ -14,14 +14,37 @@
 
 package org.casbin;
 
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.core.env.Environment;
+import org.springframework.util.StringUtils;
+
+import java.lang.management.ManagementFactory;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
 
 @SpringBootApplication
+@Slf4j
 public class Application {
-
-    public static void main(String[] args) {
-        SpringApplication.run(Application.class, args);
+    public static void main(String[] args) throws UnknownHostException {
+        ConfigurableApplicationContext application = SpringApplication.run(Application.class, args);
+        Environment env = application.getEnvironment();
+        String ip = InetAddress.getLocalHost().getHostAddress();
+        String port = env.getProperty("server.port");
+        String path = env.getProperty("server.servlet.context-path");
+        if (StringUtils.isEmpty(path)) {
+            path = "";
+        }
+        log.info("\n----------------------------------------------------------\n\t" +
+                "Application  is running! Access URLs:\n\t" +
+                "Local access website: \t\thttp://localhost:" + port + path + "\n\t" +
+                "External access website: \thttp://" + ip + ":" + port + path + "\n\t" +
+                "----------------------------------------------------------");
+        String jvmName = ManagementFactory.getRuntimeMXBean().getName();
+        log.info("Current project progress number：" + jvmName.split("@")[0]);
     }
 
 }
+
diff --git a/src/main/java/org/casbin/controller/LoginController.java b/src/main/java/org/casbin/controller/LoginController.java
index ebad95a..4fb311e 100644
--- a/src/main/java/org/casbin/controller/LoginController.java
+++ b/src/main/java/org/casbin/controller/LoginController.java
@@ -16,43 +16,29 @@
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpSession;
-import org.casbin.service.AuthenticationService;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.servlet.mvc.support.RedirectAttributes;
 
 @Controller
 public class LoginController {
 
-    @Autowired
-    private AuthenticationService authenticationService;
-
     @RequestMapping(value = {"/"}, method = RequestMethod.GET)
     public String index() {
         return "main/login";
     }
 
     @RequestMapping(value = "/login", method = RequestMethod.POST)
-    public String login(@RequestParam String username, @RequestParam String password, HttpSession session, HttpServletRequest request, RedirectAttributes redirectAttributes) {
-        boolean isAuthenticated = authenticationService.authenticate(username, password);
-
-        if (isAuthenticated) {
-            session.invalidate();
-            session = request.getSession(true);
-            session.setAttribute("username", username);
-            return "redirect:/menu";
-        } else {
-            redirectAttributes.addAttribute("error", true);
-            return "redirect:/login";
-        }
+    public String login(@RequestParam String username, HttpSession session, HttpServletRequest request) {
+        session.invalidate();
+        session = request.getSession(true);
+        session.setAttribute("username", username);
+        return "redirect:/menu";
     }
 
     @RequestMapping(value = {"/denied"}, method = RequestMethod.GET)
     public String denied() {
         return "main/denied";
     }
-}
-
+}
\ No newline at end of file
diff --git a/src/main/java/org/casbin/service/AuthenticationService.java b/src/main/java/org/casbin/service/AuthenticationService.java
deleted file mode 100644
index aa16180..0000000
--- a/src/main/java/org/casbin/service/AuthenticationService.java
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright 2024 The casbin Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package org.casbin.service;
-
-import org.springframework.stereotype.Service;
-
-@Service
-public class AuthenticationService {
-    public boolean authenticate(String username, String password) {
-        // Three valid username and password combinations are set here.
-        return ("root".equals(username) && "root".equals(password)) ||
-                ("admin".equals(username) && "admin".equals(password)) ||
-                ("user".equals(username) && "user".equals(password));
-    }
-}
-
-
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 84f0921..75fa716 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -37,6 +37,4 @@ spring:
       max-file-size: 2048MB
 
 server:
-  port: 8080
-  servlet:
-    context-path: /casbin
\ No newline at end of file
+  port: 8080
\ No newline at end of file
diff --git a/src/main/resources/templates/AdminMenu/AdminMenu.html b/src/main/resources/templates/AdminMenu/AdminMenu.html
index c986868..2abe406 100644
--- a/src/main/resources/templates/AdminMenu/AdminMenu.html
+++ b/src/main/resources/templates/AdminMenu/AdminMenu.html
@@ -3,6 +3,18 @@
 <head>
     <meta charset="UTF-8">
     <title>AdminMenu</title>
+    <style>
+        body {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            margin: 0;
+        }
+        div {
+            font-size: 24px;
+        }
+    </style>
 </head>
 <body>
 <div>
diff --git a/src/main/resources/templates/AdminMenu/AdminSubMenu_allow.html b/src/main/resources/templates/AdminMenu/AdminSubMenu_allow.html
index cd91397..8cd0e85 100644
--- a/src/main/resources/templates/AdminMenu/AdminSubMenu_allow.html
+++ b/src/main/resources/templates/AdminMenu/AdminSubMenu_allow.html
@@ -3,6 +3,18 @@
 <head>
     <meta charset="UTF-8">
     <title>AdminSubMenu_allow</title>
+    <style>
+        body {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            margin: 0;
+        }
+        div {
+            font-size: 24px;
+        }
+    </style>
 </head>
 <body>
 <div>
diff --git a/src/main/resources/templates/AdminMenu/AdminSubMenu_deny.html b/src/main/resources/templates/AdminMenu/AdminSubMenu_deny.html
index fb72b5a..96fec8a 100644
--- a/src/main/resources/templates/AdminMenu/AdminSubMenu_deny.html
+++ b/src/main/resources/templates/AdminMenu/AdminSubMenu_deny.html
@@ -3,6 +3,18 @@
 <head>
     <meta charset="UTF-8">
     <title>AdminSubMenu_deny</title>
+    <style>
+        body {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            margin: 0;
+        }
+        div {
+            font-size: 24px;
+        }
+    </style>
 </head>
 <body>
 <div>
diff --git a/src/main/resources/templates/OtherMenu/OtherMenu.html b/src/main/resources/templates/OtherMenu/OtherMenu.html
index cddee05..2e1e270 100644
--- a/src/main/resources/templates/OtherMenu/OtherMenu.html
+++ b/src/main/resources/templates/OtherMenu/OtherMenu.html
@@ -2,12 +2,23 @@
 <html lang="en">
 <head>
     <meta charset="UTF-8">
-    <title>SystemMenu</title>
+    <title>OtherMenu</title>
+    <style>
+        body {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            margin: 0;
+        }
+        div {
+            font-size: 24px;
+        }
+    </style>
 </head>
 <body>
 <div>
     OtherMenu
 </div>
-
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/src/main/resources/templates/UserMenu/UserMenu.html b/src/main/resources/templates/UserMenu/UserMenu.html
index f06186b..4d51739 100644
--- a/src/main/resources/templates/UserMenu/UserMenu.html
+++ b/src/main/resources/templates/UserMenu/UserMenu.html
@@ -3,6 +3,18 @@
 <head>
     <meta charset="UTF-8">
     <title>UserMenu</title>
+    <style>
+        body {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            margin: 0;
+        }
+        div {
+            font-size: 24px;
+        }
+    </style>
 </head>
 <body>
 <div>
diff --git a/src/main/resources/templates/UserMenu/UserSubMenu_allow.html b/src/main/resources/templates/UserMenu/UserSubMenu_allow.html
index 0f4881e..8673458 100644
--- a/src/main/resources/templates/UserMenu/UserSubMenu_allow.html
+++ b/src/main/resources/templates/UserMenu/UserSubMenu_allow.html
@@ -3,6 +3,18 @@
 <head>
     <meta charset="UTF-8">
     <title>UserSubMenu_allow</title>
+    <style>
+        body {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            margin: 0;
+        }
+        div {
+            font-size: 24px;
+        }
+    </style>
 </head>
 <body>
 <div>
diff --git a/src/main/resources/templates/UserMenu/UserSubMenu_deny.html b/src/main/resources/templates/UserMenu/UserSubMenu_deny.html
index 4338eea..75e2307 100644
--- a/src/main/resources/templates/UserMenu/UserSubMenu_deny.html
+++ b/src/main/resources/templates/UserMenu/UserSubMenu_deny.html
@@ -3,6 +3,18 @@
 <head>
     <meta charset="UTF-8">
     <title>UserSubMenu_deny</title>
+    <style>
+        body {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            margin: 0;
+        }
+        div {
+            font-size: 24px;
+        }
+    </style>
 </head>
 <body>
 <div>
diff --git a/src/main/resources/templates/UserMenu/UserSubSubMenu.html b/src/main/resources/templates/UserMenu/UserSubSubMenu.html
index 1b580eb..a357474 100644
--- a/src/main/resources/templates/UserMenu/UserSubSubMenu.html
+++ b/src/main/resources/templates/UserMenu/UserSubSubMenu.html
@@ -3,6 +3,18 @@
 <head>
     <meta charset="UTF-8">
     <title>UserSubSubMenu</title>
+    <style>
+        body {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            margin: 0;
+        }
+        div {
+            font-size: 24px;
+        }
+    </style>
 </head>
 <body>
 <div>
diff --git a/src/main/resources/templates/main/login.html b/src/main/resources/templates/main/login.html
index 2fc9010..7dd71cd 100644
--- a/src/main/resources/templates/main/login.html
+++ b/src/main/resources/templates/main/login.html
@@ -2,26 +2,22 @@
 <html lang="en">
 <head>
     <meta charset="UTF-8">
-    <title>login</title>
+    <title>Login</title>
+    <link href="https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css" rel="stylesheet">
 </head>
-<body>
-<div class="panel panel-primary" style="width: 500px; margin: 5% auto;">
-    <div class="panel-heading">login</div>
-    <div class="panel-body">
-        <form action="login" method="post" class="form-horizontal">
-            <div class="input-group input-sm" style="margin-bottom: 10px">
-                <label class="input-group-addon"><i class="glyphicon glyphicon-user"></i></label>
-                <input type="text" class="form-control" name="username" placeholder="username">
-            </div>
-            <div class="input-group input-sm" style="margin-bottom: 10px">
-                <label class="input-group-addon"><i class="glyphicon glyphicon-lock"></i></label>
-                <input type="password" class="form-control" name="password" placeholder="password">
-            </div>
-            <div class="form-actions">
-                <input type="submit" class="btn btn-block btn-primary btn-default" value="sign in">
-            </div>
+<body class="flex h-screen bg-gray-200">
+<div class="m-auto w-full max-w-xs">
+    <div class="bg-white shadow-md rounded px-8 pt-6 pb-8 mb-4">
+        <div class="mb-4">
+            <h1 class="block text-gray-700 text-sm font-bold mb-2">Login as:</h1>
+        </div>
+        <form action="login" method="post">
+            <input type="hidden" name="password" value="dummy">
+            <button type="submit" name="username" value="root" class="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded focus:outline-none focus:shadow-outline mb-3 w-full">Root</button>
+            <button type="submit" name="username" value="admin" class="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded focus:outline-none focus:shadow-outline mb-3 w-full">Admin</button>
+            <button type="submit" name="username" value="user" class="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded focus:outline-none focus:shadow-outline w-full">User</button>
         </form>
     </div>
 </div>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/src/main/resources/templates/main/menu.html b/src/main/resources/templates/main/menu.html
index 960f8b6..caa1bec 100644
--- a/src/main/resources/templates/main/menu.html
+++ b/src/main/resources/templates/main/menu.html
@@ -1,108 +1,94 @@
 <!DOCTYPE html>
-<html lang="en">
+<html lang="en" xmlns="http://www.w3.org/1999/html">
 <head>
     <meta charset="UTF-8">
-    <title>Jcasbin-Menu-Permission</title>
-    <!-- Bootstrap CSS -->
-    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
-    <!-- Custom style -->
+    <title>Menu with Submenus</title>
+    <link href="https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css" rel="stylesheet">
     <style>
-        .card-header, .non-collapse-item {
-            padding: 0.75rem 1.25rem;
-            margin-bottom: 0;
-            background-color: rgba(0,0,0,.03);
-            border-bottom: 1px solid rgba(0,0,0,.125);
-            cursor: pointer;
+        .menu-container {
+            max-height: 400px;
+            overflow-y: auto;
         }
-        .non-collapse-item p {
-            margin-bottom: 0;
-            text-align: center;
+        .submenu-container {
+            display: none;
+            position: absolute;
+            left: 100%;
+            top: 0;
+            min-width: 200px;
+            z-index: 10;
+            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
         }
-        .card-body p {
-            padding-left: 20px;
+        .submenu-item .submenu-container {
+            left: 100%;
+            top: 0;
         }
-        .submenu-background {
-            background-color: #f8f9fa;
-            padding: 10px;
-            border-radius: 5px;
-            margin-top: 5px;
+        .menu-item:hover > .submenu-container {
+            display: block;
+        }
+        .submenu-item:hover > .submenu-container {
+            display: block;
+        }
+        .menu-item {
+            width: 150px;
         }
-
     </style>
 </head>
 <body>
 
-<!-- Recursive menu fragment -->
-<div th:fragment="menuFragment(menuList, isTopLevel)">
-    <div th:each="menu, menuStat: ${menuList}">
-        <!-- Items with submenus -->
-        <div th:if="${menu.subMenus.size() != 0 && menu.subMenus != null}">
-            <div th:if="${isTopLevel}" class="card">
-                <div class="card-header">
-                    <h4 class="mb-0">
-                        <button class="btn btn-link" type="button" data-toggle="collapse" th:data-target="| #collapse${menuStat.index} |">
-                            <span th:src="${menu.url}" th:text="${menu.name}">Menu Name</span>
-                        </button>
-                    </h4>
-                </div>
-
-                <div th:id="|collapse${menuStat.index}|" class="collapse" data-parent="#accordion">
-                    <div class="card-body">
-                        <div th:replace="this :: menuFragment(${menu.subMenus}, false)"></div>
+<div class="container mx-auto p-4 flex justify-center items-center min-h-screen">
+    <div class="menu-container bg-white rounded-md shadow-lg">
+        <div th:fragment="menuFragment(menuList, isTopLevel)">
+            <div th:each="menu, menuStat : ${menuList}" class="relative">
+                <div th:if="${menu.subMenus.size() != 0 && menu.subMenus != null}">
+                    <div th:if="${isTopLevel}" class="bg-gray-100 border-b border-gray-200 cursor-pointer hover-effect menu-item">
+                        <h4 class="m-0 p-2 flex justify-between items-center">
+                            <div class="text-gray-800 hover:text-gray-600" th:attr="onclick=|window.location.href='${menu.url}'|" th:text="${menu.name}">Menu Name</div>
+                        </h4>
+                        <div class="submenu-container">
+                            <div class="bg-white submenu-background" th:replace="this :: menuFragment(${menu.subMenus}, false)"></div>
+                        </div>
+                    </div>
+                    <div th:unless="${isTopLevel}" class="submenu-background hover:bg-blue-300 hover-effect submenu-item">
+                        <div class="p-2 text-gray-800 hover:text-gray-600" th:attr="onclick=|window.location.href='${menu.url}'|" th:text="${menu.name}">Submenu Name</div>
+                        <div class="submenu-container">
+                            <div th:replace="this :: menuFragment(${menu.subMenus}, false)"></div>
+                        </div>
                     </div>
                 </div>
-            </div>
-            <div th:unless="${isTopLevel}" class="submenu-background">
-                <button class="btn btn-link" type="button" data-toggle="collapse" th:data-target="| #collapseSub${menuStat.index} |">
-                    <span th:src="${menu.url}" th:text="${menu.name}">Submenu Name</span>
-                </button>
-                <div th:id="|collapseSub${menuStat.index}|" class="collapse">
-                    <div th:replace="this :: menuFragment(${menu.subMenus}, false)"></div>
+                <div th:if="${menu.subMenus.size() == 0}">
+                    <a class="block p-2 text-gray-800 hover:text-gray-600 hover-effect menu-item" th:href="${menu.url}" th:text="${menu.name}">Menu Item</a>
                 </div>
             </div>
         </div>
-
-        <!-- No submenu items -->
-        <div th:if="${menu.subMenus.size() == 0}">
-            <a th:src="${menu.url}" th:text="${menu.name}">Menu Item</a>
-        </div>
     </div>
-</div>
 
-<div id="main" class="container-fluid">
-    <div id="main_nav" class="d-inline-block">
-        <div id="accordion">
-            <!-- Call the recursive fragment -->
-            <div th:replace="this :: menuFragment(${menus}, true)"></div>
-        </div>
-        <div class="logout-button-container">
-            <button id="logoutButton" class="btn btn-danger">log out</button>
-        </div>
+    <div id="main_nav" class="mt-4">
+        <div th:replace="this :: menuFragment(${menus}, true)"></div>
+        <button id="logoutButton" class="mt-4 px-4 py-2 bg-red-600 text-white rounded hover:bg-red-700 transition duration-300 ease-in-out">Log out</button>
     </div>
 </div>
 
-<!-- Bootstrap JS, Popper.js, and jQuery -->
-<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
-<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
-<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
 <script>
     document.addEventListener('DOMContentLoaded', function() {
-        var clickableItems = document.querySelectorAll('[src]');
-        clickableItems.forEach(function(item) {
-            item.addEventListener('click', function() {
-                var url = this.getAttribute('src');
-                if (url) {
-                    window.location.href = url;
-                }
+        document.querySelectorAll('.menu-item, .submenu-item').forEach(function(item) {
+            item.addEventListener('mouseenter', function() {
+                let submenu = this.querySelector('.submenu-container');
+                if(submenu) submenu.classList.remove('hidden');
+            });
+            item.addEventListener('mouseleave', function() {
+                let submenu = this.querySelector('.submenu-container');
+                if(submenu) submenu.classList.add('hidden');
             });
         });
+
         var logoutButton = document.getElementById('logoutButton');
         logoutButton.addEventListener('click', function() {
             sessionStorage.clear();
             localStorage.clear();
-            window.location.href = '/casbin';
+            window.location.href = '/';
         });
     });
 </script>
+
 </body>
 </html>