Site not mobile responsive and dangles on Samsun s5..

Hi,
We observed that the top menu bar content of our site wasn't mobile responsive enough and most expecially, the site dangles on Samsung s5 android phone. It shows that the content were align to left and there are some spaces to the right which leave room for dangling and option to scroll. How can I fix this?
ulr: http://www.kaisteventures.com