<div class="form-group {modifikator}">
  <label for="moleculeId" id="labelId" aria-label="" aria-labelledby="" class="form-control-label ">Label <span class="required"> </span> </label>
  <input type="text" aria-labelledby="" aria-required="true" id="" name="input" tabindex="" placeholder="Patternlab Input" class="form-control " value="">
  <p class="form-text">poznámka k inputu</p>
</div>

Modifikátory
form-group__warning
form-group__error

Šířka inputu se řeší pomocí gridu