diff --git a/impressum.html b/impressum.html
index 0d4480d..c92647a 100644
--- a/impressum.html
+++ b/impressum.html
@@ -2,10 +2,10 @@
 <html>
 <head>
   <title>Reactive Design Patterns — </title>
-  <meta charset="utf-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
-  <link rel="stylesheet" href="/local.css">
+   <meta charset="utf-8">
+   <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
+    <link rel="stylesheet" href="/local.css">
   <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
   <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
   <script src="/marked.js"></script>
@@ -31,7 +31,7 @@
               <li><a href="/alphabetical.html">alphabetically</a></li>
             </ul>
           </li>
-          <li><a href="/videos.html">Video courses</a></li>
+         <li><a href="/videos.html">Video courses</a></li>
         </ul>
       </div>
     </div>
@@ -59,7 +59,7 @@ <h1 id="impressum">Impressum</h1>
       </div>
     </div>
   </div>
-  <hr/>
+ <hr/>
   <div class="container footer">
     <div class="col-md-6">Copyright &copy;2019 Roland Kuhn</div>
     <div class="col-md-6 text-right"><a href="impressum.html">Impressum</a></div>
