sm="45" flex-gt-sm="35" flex-gt-md="25" layout layout-align="center center">
    <span>md-whiteframe="15"</span>
  </div>

  <div class="padded" md-whiteframe="16"  flex-sm="45" flex-gt-sm="35" flex-gt-md="25" layout layout-align="center center">
    <span>md-whiteframe="16"</span>
  </div>

  <div class="padded" md-whiteframe="17"  flex-sm="45" flex-gt-sm="35" flex-gt-md="25" layout layout-align="center center">
    <span>md-whiteframe="17"</span>
  </div>

  <div class="padded" md-whiteframe="18"  flex-sm