title: Symfony mobile responsive design
body: <p>i have an issue with the mobile view of my webapp. the desktop version of my webapp is already finished and now i want to style the mobile view. As allways i use bootstrap and its default navbar but if i switch onto my smartphone it do not show me the mobile version of the navbar. </p>
  
  <p>the whole website is like a small desktop view ... <br>
  i know there is a mobile bundle but that cant be the solution ... on each other website bootstrap works well ...</p>
  
  <p>Is there a spezial config to set? </p>
  
  <p><a href="https://i.stack.imgur.com/Hpm4S.png" rel="nofollow noreferrer">screenshot google chrome emulator</a></p>