Not only is the entire site responsive, but the menu is also, and all HTML elements are as well. Images, slideshows, all is made for mobile first. Bootstrap easily and efficiently scales your websites and applications with a single code base, from phones to tablets to desktops with CSS media queries.
To set up your responsive menu, please install the bootstrap nav module and set this up. How to do this can be read in this article Bootstrap nav module
On top of that, the template has the feature to add custom CSS for mobile, and even the option to show or hide certain elements on a mobile device.