JSFiddle - React, Tailwind, and code Playground

HTML

<div>?</div>
<div></div>
<div></div>
<div>?</div>
<div>?</div>
<div></div>

CSS

div {
    display:inline-block;
    margin-:2px;
    height:100px;
    width:25px;
    border:1px solid black;
    text-align:center;
}