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              <div class="wrapper">
  <div class="box a">A</div>
  <div class="box b">B</div>
  <div class="box c">C</div>
  <div class="box d">D</div>
              body {
  margin: 40px;

/*autoprefixer will add the prefixed properties for grid and columns/rows

we need to create tracks for gaps for IE*/

.wrapper {
  display: -ms-grid;
  display: grid;
  grid-gap: 10px;
  -ms-grid-columns: 100px 10px 100px 10px 100px;
  -ms-grid-rows: 100px 10px 100px;
  grid-template-columns: 100px 100px 100px;
  background-color: #fff;
  color: #444;

.box {
  background-color: #444;
  color: #fff;
  border-radius: 5px;
  padding: 20px;
  font-size: 150%;

/* in the current spec these would be postioned using auto-placement. For IE we need to set the position of the items. */

.a {
  -ms-grid-row: 1;
  -ms-grid-column: 1;
  -ms-grid-column-span: 3; /*remember the gutter is a column track!*/
  grid-column: 1 / 3;
  grid-row: 1;

.b {
  -ms-grid-row: 1;
  -ms-grid-row-span: 3;
  -ms-grid-column: 5;
  grid-column: 3;
  grid-row: 1 / 3;

.c {
  -ms-grid-row: 3;
  -ms-grid-column: 1;
  grid-column: 1;
  grid-row: 2;

.d {
  -ms-grid-column: 3;
  -ms-grid-row: 3;
  grid-column: 2;
  grid-row: 2;
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