Please forgive my ignorance but I have all the technical skills of a toddler and I imagine these issues are relatively easy to solve. I tried calling for customer support (I REALLY want to launch today!) but Wix is not available till Monday. So here I be. Anyway, I am designing my own site, which is starting to look okay but, try though I may I cannot get rid of some annoying lines that encase both my header as well as all the text I've flowed. Before I publish I want to get rid of this. I also want to get rid of the white line that's just beneath the nav bar. It went away in one iteration of the site but has since returned. I've tried EVERYTHING to get rid of it with no luck. 
Secondly, when I switch to mobile view everything looks super wonky and I am wondering if there is an easy way to optimize for mobile. Please see attached screenshot. If anyone might have a quick fix for one or both of these issues, I'd be very grateful! I am best reachable at info@mediatations.com. Thank you! Andy R.