Stylup Stylup is a markup language for managing HTML class names in responsive designs. It parses a custom syntax into conventional HTML class names so your markup is less repetitive, especially in responsive designs. Github Usage Groups <p class="[text underline uppercase]"></p> Outputs: <p class="text-underline text-uppercase"></p> <div class="@sm([span 1] no-guttering) @md([span 2]) @lg([span 4