Drop Down Menu Hidden behind Cyclone Slider

The drop down menu on my website https://www.angelstartherapies.com is being hidden by my cyclone slider. Please tell me how I can fix this. If you do give me some sort of code will you also please tell me where to place it? I have a twentyfourteen child theme and the css style sheet for that theme is inside my host gator cpanel is that right? If so where do I place that code on which line? Thank you so much for your help!