A basic example

by jmaxwell21

HTML

<!-- Learn about this code on MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/Line-based_Placement_with_CSS_Grid -->

<div class="wrapper">
   <div class="box1">One</div>
   <div class="box2">Two</div>
   <div class="box3">Three</div>
   <div class="box4">Four</div>
</div>

CSS

* {box-sizing: border-box;}

.wrapper {
    border: 2px solid #f76707;
    border-radius: 5px;
    background-color: #fff4e6;
}

.wrapper > div {
    border: 2px solid #ffa94d;
    border-radius: 5px;
    background-color: #ffd8a8;
    padding: 1em;
    color: #d9480f;
}
.wrapper {
   display: grid;
   grid-template-columns: 33% 33% 33%;
   grid-template-rows: repeat(3, 100px);
}