JSFiddle - React, Tailwind, and code Playground

HTML

<div class="title">
    <div>
        <span>03</span>
    </div>
    <h2>
        title
    </h2>
</div>

CSS

.title {
    height: 100%;
    position: absolute;
    text-align: center;
    width: 100%;
    display:table;
}

.title div,h2 {
    display:table-cell;
    vertical-align: middle;
}