How to convert from non responsive to responsive

Hi,

I’m working with an old website, where the company wants to convert from non responsive to responsive web.

I’ve chosen the Parabola theme because I know it, and because it’s similar to the website the company has now.

The website is build up in a PageLine platform, and I find it hard to change to responsive, because many things hold me back.

Maybe you can help me?
The first problem is to get access to manage the theme settings – I’m told that I don’t have access. Does it require special code to get access to the theme settings?

Also I wonder how much I have to break down from the original site. The slider doesn’t seem to correspond with Parabola. How do I make that happen?

The same goes for the boxes – how do I install them?

I haven’t gotten any further, and I may have more questions later. But I need to get started with the first part.

Thank you,
Ulla Pedersen

Website: tandlaegepedereriksen.dk