So my question has completely changed now.
I have managed to do the things I was after. However, the problem is that when I look at the website from a desktop/laptop computer the website looks great. However, when I look at the website on a smart phone, the slider bar is set to 935px so it looks massive and completely ruins the website front page.
Is there a way to change the slider bar size so it changes depending on whether you are using a smart phone or a computer?