Hello,
you can write a fully responsive web page within 5 minutes.
Please see:
1. see the result - fully responsive - great looking
video
https://mybergland.com/fwforum/bootstrap1.gif
2. take Bootstap to design your layout
video
https://mybergland.com/fwforum/bootstrap2.gif
3. edit your code
video
https://mybergland.com/fwforum/bootstrap3.gif
Best regards
Otto