JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrap">
  <div class="grid">
    <div class="item">
    Item 1
    </div>
    <div class="item">
    Item 2
    </div>
  </div>
</div>

CSS

.wrap {
  display: flex;
  flex-direction: column;
  /*justify-content: center;
  align-items: center;*/
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    grid-gap: 1rem;
    border:1px solid red;
    justify-items:center;
}

.item {
  background: #eee;
  border:1px solid blue;
}