<style>
  .d1{background:LightSkyBlue;}
  .d2{background:LightSalmon;}
  .d3{background:PaleTurquoise;}
  .d4{background:LightPink;}
  .d5{background:PaleGreen;}
  
  .container {
    font-size: 40px;
    width: 100%;
    background: LightGray;
    display: grid;
    /* modify the code below this line */
    
    grid-template-columns: auto 50px 10% 2fr 1fr;
    
    /* modify the code above this line */
    grid-template-rows: 50px 50px;
  }
</style>
  
<div class="container">
  <div class="d1">1</div>
  <div class="d2">2</div>
  <div class="d3">3</div>
  <div class="d4">4</div>
  <div class="d5">5</div>
</div>