Hello @coltimar
Yes, It is possible. First of all You need to check out below link of a screenshot. Maybe you want to do look like this for your site.
https://prntscr.com/ei5060
Then if you want to do looks like a screenshot.
So please paste the code given below in Custom CSS field (Appearance -> Customize -> Header settings -> Custom CSS).
.flex-slider-center { width: 75% !important; }
Do let me know if you need more assistance.
Regards
—
Shahid