diff --git a/book-rent/pom.xml b/book-rent/pom.xml
index 565f780..606ba8b 100644
--- a/book-rent/pom.xml
+++ b/book-rent/pom.xml
@@ -51,10 +51,11 @@
  
 <dependency>
 <groupId>org.springframework.boot</groupId>
-<artifactId>spring-devtools</artifactId>
+<artifactId>spring-boot-devtools</artifactId> <!-- ここを修正 -->
 <scope>runtime</scope>
 <optional>true</optional>
 </dependency>
+
 <dependency>
 <groupId>com.mysql</groupId>
 <artifactId>mysql-connector-j</artifactId>
diff --git a/book-rent/src/main/java/com/example/demo/controller/LoginController.java b/book-rent/src/main/java/com/example/demo/controller/LoginController.java
index d67fcc2..28d07d8 100644
--- a/book-rent/src/main/java/com/example/demo/controller/LoginController.java
+++ b/book-rent/src/main/java/com/example/demo/controller/LoginController.java
@@ -23,7 +23,7 @@ public class LoginController {
 	}
 
 	// ログイン画面表示
-	@GetMapping("/login")
+	@GetMapping("/")
 	public String showLogin() {
 		return "login";
 	}
diff --git a/book-rent/src/main/java/com/example/demo/form/EmployeeForm.java b/book-rent/src/main/java/com/example/demo/form/EmployeeForm.java
index edc1561..fde4b39 100644
--- a/book-rent/src/main/java/com/example/demo/form/EmployeeForm.java
+++ b/book-rent/src/main/java/com/example/demo/form/EmployeeForm.java
@@ -1,33 +1,82 @@
 package com.example.demo.form;
+
 /** 社員登録・編集フォーム */
 public class EmployeeForm {
-    private Integer idEmployee;
-    private String nmEmployee = "";
-    private String knEmployee = "";
-    private String mailAddress = "";
-    private String password = "";
-    private String flgAdmin = "0";
-    private String flgRetirement = "0";
+	private Integer idEmployee;
+	private String nmEmployee = "";
+	private String knEmployee = "";
+	private String mailAddress = "";
+	private String password = "";
+	private String flgAdmin = "0";
+	private String flgRetirement = "0";
 
-    public void trim() {
-        nmEmployee = t(nmEmployee); knEmployee = t(knEmployee); mailAddress = t(mailAddress);
-        flgAdmin = t(flgAdmin); flgRetirement = t(flgRetirement);
-        if (password == null) password = "";
-    }
-    private static String t(String s) { return s == null ? "" : s.trim(); }
+	public void trim() {
+		nmEmployee = t(nmEmployee);
+		knEmployee = t(knEmployee);
+		mailAddress = t(mailAddress);
+		flgAdmin = t(flgAdmin);
+		flgRetirement = t(flgRetirement);
+		if (password == null)
+			password = "";
+	}
 
-    public Integer getIdEmployee() { return idEmployee; }
-    public void setIdEmployee(Integer v) { this.idEmployee = v; }
-    public String getNmEmployee() { return nmEmployee; }
-    public void setNmEmployee(String v) { this.nmEmployee = v; }
-    public String getKnEmployee() { return knEmployee; }
-    public void setKnEmployee(String v) { this.knEmployee = v; }
-    public String getMailAddress() { return mailAddress; }
-    public void setMailAddress(String v) { this.mailAddress = v; }
-    public String getPassword() { return password; }
-    public void setPassword(String v) { this.password = v; }
-    public String getFlgAdmin() { return flgAdmin; }
-    public void setFlgAdmin(String v) { this.flgAdmin = v; }
-    public String getFlgRetirement() { return flgRetirement; }
-    public void setFlgRetirement(String v) { this.flgRetirement = v; }
+	private static String t(String s) {
+		return s == null ? "" : s.trim();
+	}
+
+	public Integer getIdEmployee() {
+		return idEmployee;
+	}
+
+	public void setIdEmployee(Integer v) {
+		this.idEmployee = v;
+	}
+
+	public String getNmEmployee() {
+		return nmEmployee;
+	}
+
+	public void setNmEmployee(String v) {
+		this.nmEmployee = v;
+	}
+
+	public String getKnEmployee() {
+		return knEmployee;
+	}
+
+	public void setKnEmployee(String v) {
+		this.knEmployee = v;
+	}
+
+	public String getMailAddress() {
+		return mailAddress;
+	}
+
+	public void setMailAddress(String v) {
+		this.mailAddress = v;
+	}
+
+	public String getPassword() {
+		return password;
+	}
+
+	public void setPassword(String v) {
+		this.password = v;
+	}
+
+	public String getFlgAdmin() {
+		return flgAdmin;
+	}
+
+	public void setFlgAdmin(String v) {
+		this.flgAdmin = v;
+	}
+
+	public String getFlgRetirement() {
+		return flgRetirement;
+	}
+
+	public void setFlgRetirement(String v) {
+		this.flgRetirement = v;
+	}
 }
diff --git a/book-rent/src/main/resources/templates/login.html b/book-rent/src/main/resources/templates/login.html
index 44aaf6e..8ad5ebc 100644
--- a/book-rent/src/main/resources/templates/login.html
+++ b/book-rent/src/main/resources/templates/login.html
@@ -5,12 +5,12 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
-    <!-- 外部スクリプトの読み込み -->
-    <script th:src="@{/js/common.js}"></script>
+<!--     外部スクリプトの読み込み -->
+<!--    <script th:src="@{/js/common.js}"></script>-->
 
-    <!-- CSSの読み込み -->
-    <link rel="stylesheet" th:href="@{/css/all.css}" type="text/css">
-    <link rel="stylesheet" th:href="@{/css/style.css}" type="text/css">
+<!--     CSSの読み込み -->
+<!--    <link rel="stylesheet" th:href="@{/css/all.css}" type="text/css">-->
+<!--    <link rel="stylesheet" th:href="@{/css/style.css}" type="text/css">-->
 
     <title>ログイン</title>
 </head>
@@ -19,21 +19,19 @@
 
     <div class="loginContainer">
 
-        <h1>ログイン</h1>
+		<h1>書籍管理システム</h1>
+		    <h2>ログイン</h2>
 
         <form th:action="@{/doLogin}"
               method="post"
               th:object="${loginInfoForm}">
 
-			  <!-- Validationエラーメッセージ -->
-			  <div class="msgBox error"
-			       th:if="${#fields.hasErrors('*')}">
-
-			      <p th:each="err : ${#fields.errors('*')}"
-			         th:text="${err}">
-			      </p>
-
-			  </div>
+            <!-- エラーメッセージ -->
+            <div class="msgBox error"
+                 th:if="${messageError != null}">
+                <span class="error"
+                      th:text="${messageError.message}"></span>
+            </div>
 
             <table>
                 <!-- メールアドレス -->