Classes list

Every class Tabs recognizes, straight from the @flickui/css source.

ClassPurpose
.tabsBase class — required
.tabs-tablistThe role="tablist" row/column containing the tab buttons
.tabs-tabEach tab button (aria-selected/aria-disabled control its styled state)
.tabs-indicatorSliding highlight bar (text style only)
.tabs-panels / .tabs-panelThe panel container and each individual panel
.action-selectBehavior hook on .tabs-tab — wires it into flickui.js's selection handling
.tabs-verticalStacks the tablist vertically and reverses the arrow-key axis
.tabs-manualActivation mode — arrow keys move focus without auto-selecting