theme: OneTone – sites

Ok guys,I need help. So my theme “OneTone” made all my sites (i dont mean on main page) look same this design https://i.imgur.com/fZW0P6j.png you can see here on photo how it looks like. And now I want to change that design but for only this page “News”, i dont want to change design of other pages JUST FOR NEWS. Help pls!