diff --git a/CSS/Element/button.css b/CSS/Element/button.css
index 8df442c..5b83ca3 100644
--- a/CSS/Element/button.css
+++ b/CSS/Element/button.css
@@ -1,3 +1,10 @@
+.buttons-container{
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: 10px;
+}
+
 .btn{
   background: var(--brand-primary);
   color: var(--brand-white);
@@ -21,6 +28,10 @@
   aspect-ratio: 1/1;
 }
 
+.btn-login{
+  background-color: transparent;
+}
+
 .btn-user > span {
   font-size: 28px;
 }
\ No newline at end of file
diff --git a/Controller/UserController.php b/Controller/UserController.php
index a58a4fc..4205514 100644
--- a/Controller/UserController.php
+++ b/Controller/UserController.php
@@ -10,13 +10,32 @@ class UserController{
     private $validData = array();
     private $errors = array();
 
+    private $labels = [
+    "name" => "Vorname*",
+    "lastname" => "Nachname*",
+    "email" => "E-Mail*",
+    "password" => "Passwort*",
+    "role" => "Rolle*"
+    ];
+
+    private $validLoginData = array();
+    private $loginErrors = array();
+    private $loginLabels = [
+        "email" => "E-Mail*",
+        "password" => "Passwort*",
+    ];
+
     public function __construct($view){
         $this->db = new UserModel();
         $this->view = $view;
     }
 
     public function showUserRegisterForm(){
-
+        $this->view->setVars([
+                    'labels' => $this->labels,
+                    'errors' => $this->errors,
+                    'validData' => $this->validData
+                ]);
     }
 
     public function showUserRegisterConfirmation(){
@@ -24,7 +43,45 @@ class UserController{
     }
 
     public function showUserLoginForm(){
+        $this->view->setVars([
+                    'labels' => $this->loginLabels,
+                    'errors' => $this->loginErrors,
+                    'validData' => $this->validLoginData
+                ]);
+    }
 
+    private function validateForm() {
+        foreach ($this->labels as $key => $label) {
+            if (!isset($_POST[$key]) || trim($_POST[$key]) === '') {
+                $this->errors[$key] = "Bitte $label angeben";
+            } else {
+                $this->validData[$key] = trim($_POST[$key]);
+            }
+        }
+
+        if (isset($this->validData['password'])) {
+            if (strlen($this->validData['password']) < 6) {
+                $this->errors['password'] = "Das Passwort muss mindestens 6 Zeichen lang sein.";
+            }
+        }
+
+        if (isset($this->validData['email']) && !filter_var($this->validData['email'], FILTER_VALIDATE_EMAIL)) {
+            $this->errors['email'] = "Bitte eine gültige E-Mail-Adresse eingeben.";
+        }
+    }
+
+    public function validateLoginForm(){
+        foreach ($this->loginLabels as $key => $label) {
+            if (isset($this->validData['password'])) {
+                if (strlen($this->validData['password']) < 6) {
+                    $this->errors['password'] = "Das Passwort muss mindestens 6 Zeichen lang sein.";
+                }
+             }
+
+            if (isset($this->validData['email']) && !filter_var($this->validData['email'], FILTER_VALIDATE_EMAIL)) {
+                $this->errors['email'] = "Bitte eine gültige E-Mail-Adresse eingeben.";
+            }
+        }
     }
 
     public function showUserLoginConfirmation(){
diff --git a/Views/Admin/showForm.phtml b/Views/Admin/showForm.phtml
index 2b7b1db..e66b63a 100644
--- a/Views/Admin/showForm.phtml
+++ b/Views/Admin/showForm.phtml
@@ -29,6 +29,7 @@ foreach ($labels as $key => $value) {
 
 <input type="hidden" name="controller" value="admin">       
 <input type="hidden" name="do" value="showForm">
-<input type="submit" name="submit" value="Absenden"></form>
+<button type="submit" class="btn">Absenden</button>
+
 
 <?php include dirname(__DIR__).'/footer.phtml'; ?>
\ No newline at end of file
diff --git a/Views/User/showUserLoginForm.phtml b/Views/User/showUserLoginForm.phtml
index e541dbf..af1cff4 100644
--- a/Views/User/showUserLoginForm.phtml
+++ b/Views/User/showUserLoginForm.phtml
@@ -4,17 +4,32 @@
 
 <h1>Als Benutzer anmelden</h1>
 
-<form method="post">
+<form method="post" class="form-grid">
 
-    <label for="reg_email">Email:</label>
-    <input type="email" name="email" id="reg_email" required>
+    <?php foreach ($labels as $key => $label): ?>
+        <div class="input">
+            <label for="reg_<?= $key ?>"><?= $label ?></label>
+            <?php if ($key === 'password'): ?>
+            <input type="password" name="<?= $key ?>" id="reg_<?= $key ?>" required>
+            <?php elseif($key === 'email'): ?>
+            <input type="email" name="<?= $key ?>" id="reg_<?= $key ?>" required>
+            <?php else: ?>
+                <input type="text" name="<?= $key ?>" id="reg_<?= $key ?>" value="<?= htmlspecialchars($validData[$key] ?? '') ?>" required>
+            <?php endif; ?>
 
-    <label for="reg_password">Passwort:</label>
-    <input type="password" name="password" id="reg_password" required>
+            <?php if (!empty($errors[$key])): ?>
+                <div class="error"><?= $errors[$key] ?></div>
+            <?php endif; ?>
+            </div>
+    <?php endforeach; ?>
+
+    
     
     <input type="hidden" name="controller" value="user">
     <input type="hidden" name="do" value="login">
     <button type="submit" class="btn" style="display: block">Login</button>
+
+
 </form>
 
 
diff --git a/Views/User/showUserRegisterForm.phtml b/Views/User/showUserRegisterForm.phtml
index 2ca254c..00c5175 100644
--- a/Views/User/showUserRegisterForm.phtml
+++ b/Views/User/showUserRegisterForm.phtml
@@ -4,35 +4,33 @@
 
 <h1>Benutzer erstellen</h1>
 
-<form method="post">
-    <h2>Registrieren</h2>
+<form method="post" class="form-grid">
 
-    <label for="reg_name">Vorname:</label>
-    <input type="text" name="name" id="reg_name" required>
+    <?php foreach ($labels as $key => $label): ?>
+        <div class="input">
+            <label for="reg_<?= $key ?>"><?= $label ?></label>
+            <?php if ($key === 'password'): ?>
+            <input type="password" name="<?= $key ?>" id="reg_<?= $key ?>" required>
+            <?php elseif ($key === 'role'): ?>
+                <label><input type="radio" name="role" value="user" <?= (isset($validData['role']) && $validData['role'] === 'user') ? 'checked' : '' ?>> User</label>
+                <label><input type="radio" name="role" value="leiter" <?= (isset($validData['role']) && $validData['role'] === 'leiter') ? 'checked' : '' ?>> Leiter</label>
+            <?php else: ?>
+                <input type="text" name="<?= $key ?>" id="reg_<?= $key ?>" value="<?= htmlspecialchars($validData[$key] ?? '') ?>" required>
+            <?php endif; ?>
 
-    <label for="reg_lastname">Nachname:</label>
-    <input type="text" name="lastname" id="reg_lastname" required>
+            <?php if (!empty($errors[$key])): ?>
+                <div class="error"><?= $errors[$key] ?></div>
+            <?php endif; ?>
+            </div>
+    <?php endforeach; ?>
 
-    <label for="reg_email">Email:</label>
-    <input type="email" name="email" id="reg_email" required>
-
-    <label for="reg_password">Passwort:</label>
-    <input type="password" name="password" id="reg_password" required>
-
-    <p>Wähle deine Rolle:</p>
-    <label>
-        <input type="radio" name="role" value="user" required> User
-    </label>
-    <label>
-        <input type="radio" name="role" value="leiter"> Leiter
-    </label>
-    
     <input type="hidden" name="controller" value="user">
     <input type="hidden" name="do" value="register">
-    <button type="submit" class="btn" style="display: block">Registrieren</button>
+
+    <button type="submit" class="btn">Registrieren</button>
 </form>
 
-<a href="?controller=User&do=showUserLoginForm">Haben Sie schon ein Benutzer Konto?</a>
+
 
 <?php
 include dirname(__DIR__).'/footer.phtml';
diff --git a/Views/header.phtml b/Views/header.phtml
index a21a709..0785e6c 100644
--- a/Views/header.phtml
+++ b/Views/header.phtml
@@ -20,7 +20,10 @@
                 <h3 class="logo">bib<span>course</span></h3>
                 <div id="metanavi">
                     <a class="btn btn-user" href="?controller=Admin&do=showForm"><span class="material-icons">person</span></a>
-                    <a class="btn btn-register" href="?controller=User&do=showUserRegisterForm">Registration</a>
+                    <div class="buttons-container">
+                        <a class="btn btn-login" href="?controller=User&do=showUserLoginForm">Anmeldung</a>
+                        <a class="btn btn-register" href="?controller=User&do=showUserRegisterForm">Registration</a>
+                    </div>
                 </div>
             </div>
             <nav>