Positioning items against lines

HTML

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

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

CSS

.wrapper { 
  display: grid; 
  grid-template-columns: 1fr 7fr;
  grid-auto-rows: 100px; 
} 

.box1 { 
  grid-column: 1 / 3;
  grid-row: 1 / 1; 
}

.box2 { 
  grid-column: 1 / 1; 
  grid-row: 2 / 2; 
}
.box3 { 
  grid-column: 2 / 2; 
  grid-row: 2 / 2; 
}

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

.wrapper > div {
  border: 2px solid #ffa94d;
  border-radius: 5px;
  background-color: #ffd8a8;
  color: #d9480f;
}