JSFiddle - React, Tailwind, and code Playground

HTML

<div class="demo">
    <span>Span 1</span>
    <span>Span XYZ ABC DEF GHJ</span>
    <span>Span 3</span>
</div>

CSS

div.demo {
    display:table;
    width:100%;
    table-layout: fixed;
}
div.demo span {
    display:table-cell;
    text-align:center;
    border: 1px solid gray;
}