JSFiddle - React, Tailwind, and code Playground

HTML

<section>
  <div>1</div>
  <div>2</div>
  <div>3</div>
  <div>4</div>
  <div>5</div>
  <div>6</div>
  <div>7</div>
  <div>8</div>
  <div>9</div>
  <div>10</div>
</section>

CSS

section {
  display: grid;
  grid-auto-rows: auto;
  grid-auto-flow: column;
  grid-gap: 10px;
  grid-template-columns: repeat(auto-fill, minmax(45px, 50px));
  grid-template-rows: repeat(auto-fill, minmax(45px, 50px));
}

div {
  min-width: 45px;
  max-width: 50px;
  background: gray;
}