CSS Code Error : use of grid columns

Tell us what’s happening:
Describe your issue in detail here.

grid-template-columns not working
Your code so far


<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;
  /* Only change code below this line */
  grid-template-columns: 100px 100px 100px;
  /* Only change code above this line */
}
</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>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36

Challenge: Add Columns with grid-template-columns

Link to the challenge:

What do you mean that it is not working?

the test is not getting clear, it’s still showing it should have a container class with grid-template-columns property according to me its right not working still