n wrap-reverse">
    <div class="item1"></div><div class="item2"></div>
    <div class="item3"></div><div class="item4"></div>
  </div>
  <div class="flexContainer" style="flex-flow: column-reverse wrap">
    <div class="item1"></div><div class="item2"></div>
    <div class="item3"></div><div class="item4"></div>
  </div>
  <div class="flexContainer" style="flex-flow: column-reverse wrap-reverse">
    <div class="item1"></div><div class="item2"></div>
    <div class="item3"></div><div class="item4"></div>
 