Try the components
Click, type, toggle, and use Tab to inspect keyboard focus. Sample settings are not saved.
Text contrast checks
Checks compare the selected solid colors against the 4.5:1 threshold for normal text. These are color checks, not an accessibility certification. Also inspect focus visibility, control boundaries, zoom, and actual content.
Use your design
CSS is scoped to .bt-ui. The HTML demo includes the exact preview styles, markup, and sample interactions. No fonts or libraries are downloaded.