diff --git a/admin/check_session.php b/admin/check_session.php
index 36fedbd..d49cae4 100755
--- a/admin/check_session.php
+++ b/admin/check_session.php
@@ -7,7 +7,7 @@ require_once '../inc/header.php'; ?>
     <h2 class="mb-4">Debug-Informationen</h2>
 
     <div class="card shadow mb-4">
-        <div class="card-header bg-primary text-white">
+        <div class="card-header bg-primary-subtle text-secondary">
             <h4>Session-Daten ($_SESSION)</h4>
         </div>
         <div class="card-body">
@@ -20,7 +20,7 @@ require_once '../inc/header.php'; ?>
     </div>
 
     <div class="card shadow">
-        <div class="card-header bg-success text-white">
+        <div class="card-header bg-success bg-opacity-50 text-secondary">
             <h4>Cookie-Daten ($_COOKIE)</h4>
         </div>
         <div class="card-body">
@@ -31,10 +31,6 @@ require_once '../inc/header.php'; ?>
             <?php endif; ?>
         </div>
     </div>
-
-    <div class="text-center mt-4">
-        <a href="index.php" class="btn btn-secondary">Zurück zur Startseite</a>
-    </div>
 </div>
 
 <?php require_once '../inc/footer.php'; ?>
\ No newline at end of file
diff --git a/admin/colors.php b/admin/colors.php
index 700b64b..e29ed3a 100755
--- a/admin/colors.php
+++ b/admin/colors.php
@@ -88,7 +88,7 @@ require_once '../inc/header.php';
     <?php endif; ?>
 
     <div class="card shadow mb-4">
-        <div class="card-header bg-primary text-white">
+        <div class="card-header bg-primary-subtle text-secondary">
             <h4 class="mb-0"><?php echo $edit_mode ? 'Farbe bearbeiten' : 'Neue Farbe hinzufügen'; ?></h4>
         </div>
         <div class="card-body">
@@ -108,11 +108,11 @@ require_once '../inc/header.php';
                         <div class="form-text" style="visibility: hidden;">&nbsp;</div>
                     </div>
                     <div class="col-12 d-flex justify-content-start">
-                        <button type="submit" class="btn btn-<?php echo $edit_mode ? 'success' : 'primary'; ?> w-auto me-2">
+                        <button type="submit" class="btn btn-sm btn-outline-<?php echo $edit_mode ? 'success' : 'primary'; ?> w-auto me-2 d-flex align-items-center">
                             <?php echo $edit_mode ? 'Speichern' : 'Hinzufügen'; ?>
                         </button>
                         <?php if ($edit_mode): ?>
-                            <a href="colors.php" class="btn btn-secondary w-auto">Abbrechen</a>
+                            <a href="colors.php" class="btn btn-sm btn-outline-secondary w-auto d-flex align-items-center">Abbrechen</a>
                         <?php endif; ?>
                     </div>
                 </div>
@@ -121,7 +121,7 @@ require_once '../inc/header.php';
     </div>
 
     <div class="card shadow">
-        <div class="card-header bg-secondary text-white">
+        <div class="card-header bg-secondary bg-opacity-50 text-secondary">
             <h4 class="mb-0">Aktuelle Farben</h4>
         </div>
         <div class="card-body">
diff --git a/admin/meetings.php b/admin/meetings.php
index 3e2b20c..2140458 100755
--- a/admin/meetings.php
+++ b/admin/meetings.php
@@ -180,7 +180,7 @@ require_once '../inc/header.php';
     <?php endif; ?>
 
     <div class="card shadow mb-4">
-        <div class="card-header bg-primary text-white">
+        <div class="card-header bg-primary-subtle text-secondary">
             <h4 class="mb-0"><?php echo $edit_mode ? 'Termin bearbeiten' : 'Neuen Termin hinzufügen'; ?></h4>
         </div>
         <div class="card-body">
@@ -212,11 +212,11 @@ require_once '../inc/header.php';
                     </div>
                     <div class="col-12 d-flex justify-content-start">
                         <div class="d-flex w-100">
-                            <button type="submit" class="btn btn-<?php echo $edit_mode ? 'success' : 'primary'; ?> w-auto me-2">
+                            <button type="submit" class="btn btn-sm btn-outline-<?php echo $edit_mode ? 'success' : 'primary'; ?> w-auto me-2">
                                 <?php echo $edit_mode ? 'Speichern' : 'Hinzufügen'; ?>
                             </button>
                             <?php if ($edit_mode): ?>
-                                <a href="meetings.php" class="btn btn-secondary w-auto">Abbrechen</a>
+                                <a href="meetings.php" class="btn btn-sm btn-outline-secondary w-auto">Abbrechen</a>
                             <?php endif; ?>
                         </div>
                     </div>
@@ -226,7 +226,7 @@ require_once '../inc/header.php';
     </div>
 
     <div class="card shadow">
-        <div class="card-header bg-secondary text-white">
+        <div class="card-header bg-secondary bg-opacity-50 text-secondary">
             <h4 class="mb-0">Übersicht der Termine</h4>
         </div>
         <div class="card-body">
diff --git a/admin/users.php b/admin/users.php
index b995cf0..c0d3908 100755
--- a/admin/users.php
+++ b/admin/users.php
@@ -106,7 +106,7 @@ require_once('../inc/header.php');
     <?php endif; ?>
 
     <div class="card shadow mb-4">
-        <div class="card-header bg-primary text-white">
+        <div class="card-header bg-primary-subtle text-secondary">
             <h4 class="mb-0"><?php echo $edit_mode ? 'Benutzer bearbeiten' : 'Neuen Benutzer hinzufügen'; ?></h4>
         </div>
         <div class="card-body">
@@ -136,11 +136,11 @@ require_once('../inc/header.php');
                         <div class="form-text" style="visibility: hidden;">&nbsp;</div>
                     </div>
                     <div class="col-12 d-flex justify-content-start">
-                        <button type="submit" class="btn btn-<?php echo $edit_mode ? 'success' : 'primary'; ?> w-auto me-2">
+                        <button type="submit" class="btn btn-sm btn-outline-<?php echo $edit_mode ? 'success' : 'primary'; ?> w-auto me-2">
                             <?php echo $edit_mode ? 'Speichern' : 'Hinzufügen'; ?>
                         </button>
                         <?php if ($edit_mode): ?>
-                            <a href="users.php" class="btn btn-secondary w-auto">Abbrechen</a>
+                            <a href="users.php" class="btn btn-sm btn-outline-secondary w-auto">Abbrechen</a>
                         <?php endif; ?>
                     </div>
                 </div>
@@ -149,7 +149,7 @@ require_once('../inc/header.php');
     </div>
 
     <div class="card shadow">
-        <div class="card-header bg-secondary text-white">
+        <div class="card-header bg-secondary bg-opacity-50 text-secondary">
             <h4 class="mb-0">Benutzerübersicht</h4>
         </div>
         <div class="card-body">
diff --git a/change_password.php b/change_password.php
index 5e8b8a4..e97c533 100755
--- a/change_password.php
+++ b/change_password.php
@@ -63,8 +63,10 @@ require_once 'inc/header.php';
     <div class="row justify-content-center">
         <div class="col-md-8 col-lg-6">
             <div class="card shadow">
+                <div class="card-header bg-primary-subtle text-secondary">
+                    <h4 class="mb-0">Passwort ändern</h4>
+                </div>
                 <div class="card-body">
-                    <h2 class="card-title text-center mb-4">Passwort ändern</h2>
                     <?php if ($message) : ?>
                         <div id="status-message" class="alert alert-<?php echo $message_type; ?> alert-dismissible fade show" role="alert">
                             <?php echo htmlspecialchars($message); ?>
@@ -90,8 +92,8 @@ require_once 'inc/header.php';
                                 Passwörter anzeigen
                             </label>
                         </div>
-                        <button type="submit" class="btn btn-primary">Passwort ändern</button>
-                        <a href="index.php" class="btn btn-secondary">Abbrechen</a>
+                        <button type="submit" class="btn btn-sm btn-outline-primary">Passwort ändern</button>
+                        <a href="index.php" class="btn btn-sm btn-outline-secondary">Abbrechen</a>
                     </form>
                 </div>
             </div>
diff --git a/login.php b/login.php
index 7bbb780..b8c0412 100755
--- a/login.php
+++ b/login.php
@@ -67,7 +67,7 @@ if ($_SERVER["REQUEST_METHOD"] == "POST") {
 
 <body>
 
-    <div class="container d-flex justify-content-center align-items-center min-vh-100 py-4">
+    <div class="container d-flex justify-content-center align-items-start min-vh-100 py-4 pt-5">
         <div class="card bg-light shadow w-100" style="max-width: 400px;">
             <div class="card-body">
                 <h4 class="card-title text-center mb-4 fs-3">DoMiLi Login</h4>
diff --git a/profil.php b/profil.php
index d9302cf..7da23bf 100755
--- a/profil.php
+++ b/profil.php
@@ -57,9 +57,10 @@ require_once 'inc/header.php'; ?>
     <div class="row justify-content-center">
         <div class="col-md-8 col-lg-6">
             <div class="card shadow">
+                <div class="card-header bg-primary-subtle text-secondary">
+                    <h4 class="mb-0">Profil bearbeiten</h4>
+                </div>
                 <div class="card-body">
-                    <h2 class="card-title text-center mb-4">Profil bearbeiten</h2>
-
                     <?php if ($message) : ?>
                         <div id="status-message" class="alert alert-<?php echo $message_type; ?> alert-dismissible fade show" role="alert">
                             <?php echo htmlspecialchars($message); ?>
@@ -80,8 +81,8 @@ require_once 'inc/header.php'; ?>
                             <label for="role" class="form-label fw-bold">Rolle</label>
                             <input type="text" class="form-control" id="role" name="role" value="<?php echo htmlspecialchars($current_role); ?>" disabled readonly>
                         </div>
-                        <button type="submit" class="btn btn-primary">Änderungen speichern</button>
-                        <a href="index.php" class="btn btn-secondary">Abbrechen</a>
+                        <button type="submit" class="btn btn-sm btn-outline-primary">Speichern</button>
+                        <a href="index.php" class="btn btn-sm btn-outline-secondary">Abbrechen</a>
                     </form>
                 </div>
             </div>