Resolved Helix template Carousel shortcode

Hi,

during the last two days I tried to figure out how I can get a clean styling for the Carousel shortcode in the Helix template. I figured out that the styling should be defined by the css files in this path: /httpdocs/joomla/plugins/system/helix/css
I commented out a lot of lines, but it seems like nothing has an effect.

The page here (http://huser.net/joomla/) shows an extra blank line/space just underneath the carousel which I don't like.

Which style do I need to change to get rid of it.

Thanks in advance,
Yvonne