how do I remove the white background from my home page slider on live site

My production site suddenly has the white background bleed above and behind my slider
http://www.projectleadershipseries.com ; however
my development4.projectleadershipseries.com site has it the way it should be.
Note the yellow is simply to tell me ("You're on Dev!")
I tried copying style.css from dev to prod and no luck.
@Jack Kitterhing has been working with me in forum.

thx

mike