JSFiddle - React, Tailwind, and code Playground

by Before

HTML

<div class="gridcontainer">
    <div class="griditem"></div><div class="griditem"></div><div class="griditem"></div><div class="griditem"></div><div class="griditem"></div><div class="griditem"></div><div class="griditem"></div><div class="griditem"></div><div class="griditem"></div><div class="griditem"></div><div class="griditem"></div><div class="griditem"></div><div class="griditem"></div><div class="griditem"></div><div class="griditem"></div><div class="griditem"></div>
</div>

CSS

div.gridcontainer
{
    width: 80px;
    line-height: 0;
}

div.griditem
{
    display: inline-block;            
    border: 1px solid black;
    width: 18px;
    height: 18px;
}