Fixes the font size of the input field of the welcome page.

css/welcome_page.css

@@ -63,7 +63,7 @@
 }
 
 #enter_room_field {
-    font-size: 16px;
+    font-size: 18px;
     padding: 15px 0px 10px 10px;
     border: none;
     -webkit-appearance: none;