<div class="container">
  <div class="grid">
    <div class="xs-6-12 sm-4-12 md-12-12 lg-6-12">
      <p>Conteúdo</p>
    </div>
    <div class="xs-6-12 sm-8-12 md-12-12 lg-6-12">
      <p>Conteúdo</p>
    </div>
  </div>
  <div class="grid">
    <div class="xs-6-12 sm-4-12 md-12-12 lg-6-12">
      <div class="grid">
        <div class="xs-6-12 sm-8-12 md-12-12 lg-6-12">
          <p>Conteúdo</p>
        </div>
        <div class="xs-6-12 sm-4-12 md-12-12 lg-6-12">
          <p>Conteúdo</p>
        </div>
      </div>
    </div>
    <div class="xs-6-12 sm-8-12 md-12-12 lg-6-12">
      <p>Conteúdo</p>
    </div>
  </div>
  <div class="grid">
    <div class="xs-12-12 sm-4-12 md-12-12 lg-6-12">
      <p>Conteúdo</p>
    </div>
    <div class="xs-12-12 sm-8-12 md-12-12 lg-6-12">
      <p>Conteúdo</p>
    </div>
  </div>
</div>