remove featured slider from one special page

Hi, I am rebuilding our website and on one page, we planned to make a large article. We want provide it with a table of content. When I add a table of content on this page, the problem is: using the table of content and after click on the heading, the content doesn’t show up, but seems to vanish behind the featured slider. Now I want to remove the featured slider from this particular page. I searched in the support forum hope to do this, but I couldn’t find the solution. The founded solution I tried was: .page-id-17 #feature-slider-section { display: non; } Result: none. Is there a css formula to remove the featured slider from a particular page? Kind regards Hans Hagmeijer