<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>
</div>
body {
  margin: 40px;
}

.wrapper {
		display: grid;
    grid-gap: 10px;
		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%;

	}

	.a {
		grid-column: 1 / span 2;
	}
	.b {
		grid-column: 3 ;
		grid-row: 1 / span 2;
	}
	.c {
		grid-column: 1 ;
		grid-row: 2 ;
	}
	.d {
		grid-column: 2 ;
		grid-row: 2 ;
	}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.