<section class="grid1">
  
  <div class="img1"></div>
  
  <div class="img2"></div>
  
  <div class="img3"></div>
  
</section>
body {
  background: #f2f2f2;
}

.grid1 {
  display: grid;
  grid-template-columns: 3fr 6fr 1fr 5fr 10fr 2fr;
  grid-template-rows: 100px auto 15px auto auto;
}

.img1 {  
  /* could use `object-fit: cover;` on an img, but tricky*/
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/210284/wooden.jpg);
  background-size: cover;
  
  grid-column: 1 / span 2;
  grid-row: 2 / span 3;
}

.img2 {  
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/210284/speaker.jpg);
  background-size: cover;
  
  grid-column: 2 / span 2;
  grid-row: 3 / span 3;
}

.img3 {  
  /* https://elements.envato.com/gradient-network-wave-backgrounds-L5PGKP */
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/210284/waves.jpg);
  background-size: cover;
  
  grid-column: 5 / span 2;
  grid-row: 4 / span 2;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.