diff --git a/src/main/java/com/example/demo/app/presentation/controller/CourseController.java b/src/main/java/com/example/demo/app/presentation/controller/CourseController.java
index 5a5e2cd..b4e34f8 100644
--- a/src/main/java/com/example/demo/app/presentation/controller/CourseController.java
+++ b/src/main/java/com/example/demo/app/presentation/controller/CourseController.java
@@ -1,8 +1,5 @@
 package com.example.demo.app.presentation.controller;
 
-import java.util.logging.Level;
-import java.util.logging.Logger;
-
 import jakarta.servlet.http.HttpSession;
 
 import org.springframework.stereotype.Controller;
@@ -25,74 +22,53 @@ import lombok.RequiredArgsConstructor;
 
 
 @Controller
-//@RequestMapping("/course")
 @RequiredArgsConstructor
 public class CourseController {
-	
-	private final static Logger LOGGER = Logger.getLogger(CourseController.class.getName());
-    // エラーメッセージ用の定数フィールド
-    private final static String SEVERE_ERROR_MESSAGE = "エラーが発生しました！";
 
-    private final HttpSession httpSession;
     private final CourseService courseService;
     private final CourseInfoService courseInfoService;
     private final UserService userService;
     
     
-    @PostMapping("/course/select/register")
+    @PostMapping("/user/register/course")
     public String showSelectCourse(@ModelAttribute UserForm userForm, Model model, HttpSession session) {
     	
-    	try {
+    	
     		
-    		session.setAttribute("userForm", userForm);
-    		model.addAttribute("mode", "regist");
-    		model.addAttribute("courseList", CourseForm.convertFrom(courseService.findAll()));
-    		model.addAttribute("courseInfoList", CourseInfoForm.convertFrom(courseInfoService.findAll()));
+		session.setAttribute("userForm", userForm);
+		model.addAttribute("mode", "regist");
+		model.addAttribute("currentCourseId", 4);
+		model.addAttribute("courseList", CourseForm.convertFrom(courseService.findAll()));
+		model.addAttribute("courseInfoList", CourseInfoForm.convertFrom(courseInfoService.findAll()));
   
+    	return "select_course";
     		
-    		return "select_course";
-    		
-    	} catch (Exception e) {
-    		// ログイン情報の破棄
-            httpSession.invalidate();
-
-            e.printStackTrace();
-
-            // エラーログ出力
-            LOGGER.log(Level.SEVERE, SEVERE_ERROR_MESSAGE, e);
-            // エラー画面遷移
-            return null;
-    	}
+    	
     }
     
     @SessionCheck
-    @GetMapping("/select/change")
-    public String showChangeCourse(Model model) {
+    @GetMapping("/course")
+    public String showChangeCourse(Model model, HttpSession session) {
     	
-    	try {
-    		
-    		model.addAttribute("mode", "change");
-    		model.addAttribute("courseList", CourseForm.convertFrom(courseService.findAll()));
-    		model.addAttribute("courseInfoList", CourseInfoForm.convertFrom(courseInfoService.findAll()));
-    		
-    		return "select_course";
-    		
-    	} catch (Exception e) {
-    		// ログイン情報の破棄
-            httpSession.invalidate();
+    	
+		LoginModel loginUser = (LoginModel) session.getAttribute("loginUser");
+		Long userId = loginUser.getUserId();
+		
+		Long currentCourseId = userService.findByUserId(userId).getCourseId();
+		model.addAttribute("mode", "change");
+		model.addAttribute("currentCourseId", currentCourseId);
+		model.addAttribute("courseList", CourseForm.convertFrom(courseService.findAll()));
+		model.addAttribute("courseInfoList", CourseInfoForm.convertFrom(courseInfoService.findAll()));
+		
 
-            e.printStackTrace();
-
-            // エラーログ出力
-            LOGGER.log(Level.SEVERE, SEVERE_ERROR_MESSAGE, e);
-            // エラー画面遷移
-            return null;
-    	}
+		return "select_course";
+    		
+    	
     }
     
     @SessionCheck
     @PostMapping("/change")
-    public String changeCourse(@RequestParam Long courseId) {
+    public String changeCourse(@RequestParam Long courseId, HttpSession httpSession) {
     	
     	LoginModel loginUser = (LoginModel) httpSession.getAttribute("loginUser");
 
diff --git a/src/main/resources/templates/authentication.html b/src/main/resources/templates/authentication.html
index d99335e..4ea2f8e 100644
--- a/src/main/resources/templates/authentication.html
+++ b/src/main/resources/templates/authentication.html
@@ -4,6 +4,8 @@
 <head>
 	<meta charset="UTF-8">
 	<title>認証</title>
+	<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
+
 </head>
 
 <body class="pb-5 pt-5">
@@ -52,8 +54,6 @@
 	    alert(/*[[${errorMessage}]]*/);
 	</script>
 	
-	<div th:replace="~{footer :: footer}">
-		</div>
 	
 </body>
 
diff --git a/src/main/resources/templates/login.html b/src/main/resources/templates/login.html
index b49f376..472e628 100644
--- a/src/main/resources/templates/login.html
+++ b/src/main/resources/templates/login.html
@@ -3,6 +3,8 @@
 <head>
 <meta charset="UTF-8">
 <title>ログイン</title>
+<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
+
 </head>
 <body class="pb-5 pt-5">
 	<div th:replace="~{header :: header}">
diff --git a/src/main/resources/templates/password_reset.html b/src/main/resources/templates/password_reset.html
index b2abc42..07d4ffb 100644
--- a/src/main/resources/templates/password_reset.html
+++ b/src/main/resources/templates/password_reset.html
@@ -3,6 +3,8 @@
 <head>
 <meta charset="UTF-8">
 <title>パスワード再設定</title>
+<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
+
 </head>
 <body>
 <!--<body class="pb-5 pt-5">-->
diff --git a/src/main/resources/templates/profile.html b/src/main/resources/templates/profile.html
index 0fe082b..8a9c72b 100644
--- a/src/main/resources/templates/profile.html
+++ b/src/main/resources/templates/profile.html
@@ -3,6 +3,8 @@
 <head>
 <meta charset="UTF-8">
 <title>プロフィール</title>
+<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
+
 </head>
 <body class="pb-5 pt-5">
 	
diff --git a/src/main/resources/templates/profile_edit.html b/src/main/resources/templates/profile_edit.html
index d82c709..ec7d81e 100644
--- a/src/main/resources/templates/profile_edit.html
+++ b/src/main/resources/templates/profile_edit.html
@@ -3,6 +3,8 @@
 <head>
 <meta charset="UTF-8">
 <title>プロフィール編集</title>
+<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
+
 </head>
 <body class="pb-5 pt-5">
 	
diff --git a/src/main/resources/templates/select_course.html b/src/main/resources/templates/select_course.html
index 7fbda20..6f3aa5c 100644
--- a/src/main/resources/templates/select_course.html
+++ b/src/main/resources/templates/select_course.html
@@ -7,6 +7,7 @@
 <title>コース選択</title>
 </head>
 <body>
+	<div th:replace="~{header :: header}"></div>
 	
 	<h1>コース選択</h1>
 	
@@ -17,7 +18,7 @@
 		<div class="accordion" id="accordionExample">
 		  <div class="accordion-item" th:each="course:${courseList}">
 		    <h2 class="accordion-header d-flex align-items-center">
-			  <input type="radio" name="courseId" th:value="${course.courseId}" class="form-check-input ms-3 me-2">
+			  <input type="radio" name="courseId" th:value="${course.courseId}" th:checked="${course.courseId==currentCourseId}" class="form-check-input ms-3 me-2">
 		      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" th:data-bs-target="'#collapse' + ${course.courseId}" aria-expanded="false" aria-controls="'collapse' + ${course.courseId}">
 				<span th:text="${course.courseName}"></span>
 		      </button>
@@ -40,6 +41,10 @@
 		</div>
 	</form>
 	
+	<th:block th:if="${mode=='change'}">
+		<div th:replace="~{footer :: footer}"></div>
+	</th:block>
+	
 	<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.7/dist/js/bootstrap.bundle.min.js"></script>
 </body>
 </html>
\ No newline at end of file
diff --git a/src/main/resources/templates/user_register.html b/src/main/resources/templates/user_register.html
index c6ec36b..1bdb65c 100644
--- a/src/main/resources/templates/user_register.html
+++ b/src/main/resources/templates/user_register.html
@@ -3,6 +3,8 @@
 <head>
 <meta charset="UTF-8">
 <title>新規会員登録</title>
+<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
+
 </head>
 <body class="pb-5 pt-5">
 	<div th:replace="~{header :: header}">
@@ -11,7 +13,7 @@
 	<main>
 		<h1>新規会員登録</h1>
 		
-		<form th:action="@{/course/select/register}" th:object="${userForm}" method="post">
+		<form th:action="@{/user/register/course}" th:object="${userForm}" method="post">
 			<div>
 				<label for="userName">氏名</label>
 				<input type="text"
diff --git a/src/main/resources/templates/user_register_confirm.html b/src/main/resources/templates/user_register_confirm.html
index 5356eb7..581457e 100644
--- a/src/main/resources/templates/user_register_confirm.html
+++ b/src/main/resources/templates/user_register_confirm.html
@@ -4,6 +4,8 @@
 <head>
 	<meta charset="UTF-8">
 	<title>新規会員登録確認</title>
+	<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
+
 </head>
 
 <body class="pb-5 pt-5">
diff --git a/src/main/resources/templates/user_register_return.html b/src/main/resources/templates/user_register_return.html
index 4ecd680..04fb234 100644
--- a/src/main/resources/templates/user_register_return.html
+++ b/src/main/resources/templates/user_register_return.html
@@ -3,6 +3,8 @@
 <head>
 <meta charset="UTF-8">
 <title>新規会員登録</title>
+<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
+
 </head>
 <body class="pb-5 pt-5">
 	<div th:replace="~{header :: header}">