div class nav__wrapper input type checkbox class menu-checkbox div cla

<div class="nav__wrapper">
  <input type="checkbox" class="menu-checkbox">
  <div class="nav" role="navigation">
    <label for="menu-checkbox" class="toggle-button"> </label>
    <ul class="nav__list">
      <li class="nav__item">
        <a > About</a>  
      </li>
      <li class="nav__item">
        <div class="sub__button">
          <a >Help</a>
        </div>                       
      </li>
      <li class="nav__item">
        <a> Features </a>
      </li>
    </ul>
  </div>
</div>