 2/5 * 150px = 93px
         1st element gets 3/5 of space: 13px + 3/5 * 150px = 103px
      -->
    <div class="flexbox">
      <img src="support/solidblue.png" style="height: 33px; flex: 2 auto"/>
      <img src="support/solidblue.png" style="height: 13px; flex: 3 auto"/>
    </div>

    <!-- E) Two flex items, getting shrunk by different amounts.

         Space-to-be-distributed = 200px - (150 + 1 + 1) - (100 + 1 + 1) = -54px
         First element scaled flex ratio = 4 * 150 = 600
         Second eleme