Responsive
With the mobile-first approach UIkit provides a consistent experience from phones and tablets to desktops.
UiKit
UIkit gives you a comprehensive collection of HTML, CSS, and JS components which is simple to use, easy to customize and extendable.
Less
UIkit is developed in LESS to write well-structured, extendable code which is easy to maintain.
Customizer
UIkit's very basic style can be extended with themes and is easy to customize to create your own look.