Owl carousel Sizes Doesn't work And header fix !

Hello,

I’m trying to make the Owl carousel like the demo completely. but doesn’t work with me.

it shows like this: http://prntscr.com/dkelb4
I’m trying to make the settings same the Demo content, No result.

And I have problem with header(RTL) in small desktop or mobile: http://prntscr.com/dkelzb

So what the point to fix it and what the problem exactly