JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container" style="height: 100px; width: 250px;">
    <a href="#">
        <img src="/img/logo.png" />
    </a>
</div>
<div class="container" style="height: 120px; width: 150px;">
    <a href="#">
        <img src="/img/keys.png" />
    </a>
</div>

CSS

.container {
    border: 2px solid #c00;
    display: table;
}
.container a {
    border: 2px solid #f90;
    display: table-cell;
    text-align: center;
    vertical-align: middle;
}
.container a img {
    border: 2px solid #9cf;
    background: #eee;
    padding: 2px;
}