KickstartCassiopeia has many features. You can choose to use all of them on all your pages, or for instance, use the popup on selected pages.
KickstartCassiopeia has the option to disable the right-click function.
By default Cassiopeia had full width header and footer. This design option is widely used on websites.
KickstartCassiopeia has the option to add custom css without the need for a custom css file or ftp access.