Modals are streamlined, but flexible, dialog prompts with the minimum required functionality and smart defaults..
A rendered modal with header, body, and set of actions in the footer.
Modals have two optional sizes, available via modifier classes to be placed on a .modal-dialog .
Using the Grid System
To take advantage of the Bootstrap grid system within a modal, just nest .rows within the .modal-body and then use the normal grid system classes.