How to make responsive layout for mobile devices without unnecessarily large layout by browsers?

Question

HTML

I am doing an adaptive layout, but phones do not adjust it at all as we would like. For example, galaxy s3 "gives" the screen width 360px, instead of actually 720px. Because of this, the layout looks very large, some elements do not fit on the screen. Is there any way to make a phone with a screen width of 720px show a 720px wide layout so that it fits on the phone's screen and not 360 as it shows? If you need an example valvestudio.a1test.ru

Answer 1

viewport specified?
why are there fixed sizes for boxFoot ?