Windy CSS styleguide

Markup
    <nav class="switch switch--color-red-light [modifier class] fg-gray-dark bg-gray-light">
        <a class="switch__item selected">first option</a>
        <a class="switch__item">second option</a>
        <a class="switch__item">third option</a>
    </nav>
Source: src/css/components/switch.less, line 166