Turn off responsive mode

Hi guys!

Is there a method to use desktop version on all devices?
There a several problems with responsive mode on iphone (for example match view and also with additional plugins) …

it has to be possible, because if i go with iphone to your demo site: themes.skywarrior… the themes also show up in desktop version.

i saw in another topic that it has to be done in main.css, but there was no information what to do…?

please help!

kind regards,
robert