I have configured and installed the slide in plugin but

I have configured and installed the slide in plugin but with a parallax display, it slide back in forth between elements. Is there a way I can target this with CSS and always keep it on top? Also, its a 1 page site so I would like to show it once and never again for that session. Is that possible. Appreciate any help, and so far my experience has been amazing with my new membership. Thanks

The site is http://www.michaelliuzza.com I have disabled the plugin for the time being.