<div class="Grid Grid--withGutter">
  <div class="u-md-size1of2 u-lg-size1of4">
    <div class="TestBox">1</div>
  </div>
  <div class="u-md-size1of2 u-lg-size1of4 ">
    <div class="TestBox u-border-top-style-none u-md-border-top-style-solid">2</div>
  </div>
  <div class="u-md-size1of2  u-lg-size1of4">
    <div class="TestBox u-border-top-style-none  u-lg-border-top-style-solid">3</div>
  </div>
  <div class="u-md-size1of2 u-lg-size1of4">
    <div class="TestBox u-border-top-style-none u-lg-border-top-style-solid">4</div>
  </div>
</div>