Twenty sixteen theme and Live Composer – full width

Hello,

please help me, how can I set up child theme to twenty sixteen theme for using of Live Composer plugin for building of content of pages. I found some codes which can do full width pages but when I use Live Composer to edit the page and when I add Modules row, so this modules row is not in full width (I nedd to have Modules row from left to right side of page, from whole page, same as in Blank theme from Live Composer). Please help me. The solution will be for full width of everything header, Content, Footer. I am not programmer, so please help me and please send me complete instruction how set up it. Thank you very much.

(I want to use twenty sixteen theme with Live composer, because I read, that for best security is to used some template which is all right with Theme check plugin – is it true for security? …. because when I use Blank theme from Live Composer in theme check plugin there are some information which are required)