:root{--bb-space-xs:0.25rem;--bb-space-sm:0.5rem;--bb-space-md:1rem;--bb-space-lg:2rem;--bb-space-xl:4rem;--bb-radius-sm:0.25rem;--bb-radius-md:0.5rem;--bb-radius-lg:1rem;--bb-transition-fast:150ms ease;--bb-transition-normal:300ms ease}