Use custom css to make rev slider responsive

Hi,

I am using revolution slider and I would like to use page-specific CSS to adjust my slider to auto instead of full width. I am aware that you can do this using the layout feature within each slider itself. However, it isn’t working due to the fact that I have specific sliders set to full width by default via CSS. So I would like to do it via .page-id Therefore, this slider on this particular page is set to auto and not full width and does not cover my custom background. I added a sample slider. The website isn’t live so I’ve opened the page in question for viewing. Here’s an example of the type of code I think I need.

.page-id-1041 #rs-slide .welcome_fullwidth {display:none}

The page I need help with: [log in to see the link]