On pc in editor, i can see margins, but on phone when published not

So i’ve created blokc, added flexbox in it, added picture, and it works fine in editor itself when i strech or shrink, it goes smaller and bigger. But when i published and checked on my phone. picture keeps 100%, even though i’ve set to 70% in editor. + there is no margin between navabar and header, which is my biggest issue. I tried everything, but looks like it doesnt work on the phone. What am i doing wrong? How can i get that same margin i can see in editor, on my phone landscape also? Thank you

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