diff --git a/src/assets/config/config.dev.json b/src/assets/config/config.dev.json
index bfcafa864e8d1c4c8058ec0df6dc464e3cb6b380..17982c317022375a71fd775d2ba2d08daf2d8d55 100644
--- a/src/assets/config/config.dev.json
+++ b/src/assets/config/config.dev.json
@@ -2,10 +2,10 @@
     "env": {
         "name": "dev"
     },
-    
+
     "authentication": {
         "lecturer": {
-            "allowGuest": false
+            "allowGuest": true
         },
         "student": {
             "allowGuest": true
diff --git a/src/index.html b/src/index.html
index 624754f8527f2226f7783a3ce8afbd8c1f81a504..c50d412a78708e0fcfd76e6dbacdda90150e7b49 100644
--- a/src/index.html
+++ b/src/index.html
@@ -3,8 +3,8 @@
 <head>
   <meta charset="utf-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <meta name="description" content="A responsive, interactive Audience Response System, developed at THM">
-  <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=2.0">
+  <meta name="description" content="A responsive, interactive Audience Response System developed at THM">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=5.0">
   <title>ARSnova</title>
 
   <base href="/">
@@ -36,7 +36,7 @@
 
   <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:regular,bold,italic,thin,light,bolditalic,black,medium&amp;lang=en">
   <link rel="manifest" href="manifest.webmanifest">
-  <meta name="theme-color" content="#fafafa">
+  <meta name="theme-color" content="#121212">
 </head>
 <body>
   <app-root></app-root>