Align an Item Horizontally using justify-self

Summary

The content of each item is located in a box referred to as a cell.
The justify-self property is used to align a content’s position within its cell horizontally.
- stretch: Content will fill the width of the cell.
- start: aligns the content at the left of the cell.
- center: aligns the content in the center of the cell.
- end: aligns the content at the right of the cell.

Final Code

<style>
  .item1{background: LightSkyBlue;}

  .item2 {
    background: LightSalmon;
    /* Only change code below this line */
    justify-self: center;
    
    /* Only change code above this line */
  }

  .item3{background:PaleTurquoise;}
  .item4{background:LightPink;}
  .item5{background:PaleGreen;}

  .container {
    font-size: 40px;
    min-height: 300px;
    width: 100%;
    background: LightGray;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    grid-gap: 10px;
  }
</style>

<div class="container">
  <div class="item1">1</div>
  <div class="item2">2</div>
  <div class="item3">3</div>
  <div class="item4">4</div>
  <div class="item5">5</div>
</div>