From Brotato Wiki
<input class="mytabs__radio" name="tabby-a" id="mytabby-a-1" type="radio" checked> <input class="mytabs__radio" name="tabby-a" id="mytabby-a-2" type="radio"> <input class="mytabs__radio" name="tabby-a" id="mytabby-a-3" type="radio"> <input class="mytabs__radio" name="tabby-a" id="mytabby-a-4" type="radio">