DBFree offers various functions for building attractive user interfaces.
All functions are tailored on Twitter Bootstrap 3.3.5, that is they return code compatible with this famous HTML framework.
You can use the functions provided by DBX-3 and DBX-4 libraries, write the code manually or a combination of both.
Notice that the resulting page sent to browser contains always and only pure CSS code (check yourself by exposing the HTML underlying this page).
Here below you may see in action, directly in the page, a collection of most used UI functions like button(),getStr(),menu():