Position of items in screen

Hello,

I’m building my web page ( http://www.anarqio.com ), but I’m having problems with the place that each ítem occupies in the screen, because their height changes according to the computer or device from where you access to it. This does not happen in the main page of your demo site, your headings, your icons, and the headings bellow always keep a regular distance between them no matter de computer from where you access to the web.

How can I fix it?
Thanks