The .ui-* Classes
TailUI uses .ui-* CSS classes. Each token maps to a class. They are independent, order doesn't matter, and they combine freely.
<!-- All valid --><div class="ui-card"><div class="ui-card ui-elevated"><div class="ui-card ui-elevated ui-hoverable"><div class="ui-card ui-elevated ui-hoverable ui-compact">Instead of describing how something looks with utility classes, you describe what it is with semantic .ui-* classes.