Slide revolution is hiding my menu item

Hello, I have Slide revolution plugin on my website. I like it. But, I notice that it hiding my dropdown menu item (image 1 http://positifstyle.com/imaginarium/devenez-une-meilleure-version-de-vous-meme/). In the other pages, where I didn't add a slide, the dropdown menu is fine (image 2 http://positifstyle.com).
Can anyone has an idea how to fix this?

Thank you in advance