Need css help with coursepress featured image

Hi,

Approximately 765px width screen size on ward the featured image container has some layout issue. It looks like the attached screenshots. How to make the featued image or video fill the container in all screen sizes?

http://bit.ly/1cI3WQT

http://bit.ly/1j6N8WM

2. Also the mobile menu seems unable to collapse and close the menu once it opened.

Thanks.