IPhone5 and fixed 1280px container, why is it running at low height?

Question

iPhone

Hello colleagues, I've been fighting for more than an hour, nothing helps. For 4 months in the studio I have been making non-adaptive templates for joomla from scratch, there has always been a 960px container, now there are several sites with a 1280px container. From miracle freelancers. Everything is fine, but the trouble with the fifth iPhone. The main page is long, everything is fine, but if some page is smaller than the height of the iPhone screen, then the site moves around and a scroll bar appears, I make the site height at least 1900px, and everything is fine. What can you suggest?
ocenka-gel.ru/index.php/o-kompanii here, for example, a short page, it starts to go, while on all other devices and smartphones everything is fine. Thank you.

Answer 1

<meta name="viewport" content="width=1280">
Here are the fixed container solutions. Since the iPhone initially defaults to a width of 960.