MLAB-253: replace bootstrap.css with m4lab.css

index.html

@@ -5,7 +5,7 @@
   <meta name="viewport" content="width=device-width, initial-scale=1.0, shrink-to-fit=no">
   <title>Transferportal HfT Stuttgart</title>
   <link rel="stylesheet" href="/css/bootstrap.min.css">
-  <link rel="stylesheet" href="/css/bootstrap.css">
+  <link rel="stylesheet" href="/css/m4lab.css">
   <link rel="stylesheet" href="/fonts/ionicons.min.css">
   <link rel="stylesheet" href="/css/Testimonials.css">
   <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.2/css/all.css" integrity="sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay" crossorigin="anonymous">

videoconference.html

@@ -6,7 +6,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0, shrink-to-fit=no">
     <title>Videokonferenzen</title>
     <link rel="stylesheet" href="/css/bootstrap.min.css">
-    <link rel="stylesheet" href="/css/bootstrap.css">
+    <link rel="stylesheet" href="/css/m4lab.css">
     <link rel="stylesheet" href="/fonts/font-awesome.min.css">
     <link rel="stylesheet" href="/fonts/ionicons.min.css">
     <link rel="stylesheet" href="/css/Testimonials.css">