div row

<div class="products-row clearfix">
      <div class="col-md-3 col-sm-6 col1 cell">и тут мало Lorem ipsum dolor sit amet, consectetur adipisicing elit. Sequi recusandae, odio maxime numquam eum suscipit!</div>
      <div class="col-md-3 col-sm-6 col2 cell">тут мало Lorem ipsum dolor sit amet, consectetur adipisicing elit. Dignissimos quidem dolores nihil nostrum officiis quos praesentium iure eius dolorum, eos tempore repudiandae quae deleniti, ullam in labore. Earum totam dignissimos repudiandae expedita dicta consequatur cum, perferendis cumque nostrum at corporis explicabo unde aspernatur eaque consectetur assumenda nobis quasi quis, hic commodi saepe, fugiat impedit? Nam.</div>
      <div class="col-md-3 col-sm-6 col3 cell">тут очень много</div>
      <div class="col-md-3 col-sm-6 col4 cell">тут мало содержимого</div>
</div>
---------------------
.products-row {
    width: 100%;
    margin: 0 auto;
    align-items: stretch;
    display: flex;
    justify-content: space-between;
  }
.col1, .col2, .col3, .col4{
    width: 25%;
    border:2px solid #000;
    margin-right: -2px;
    }

Размещение 4 дивов в ряд - одинаковая высота