Badge

HTML

<div class="badge">
    ...
</div>

CSS

.badge {
    /* Center the content */
    align-items: center;
    display: flex;
    justify-content: center;

    /* Colors */
    background-color: #d1d5db;
    color: #fff;

    /* Rounded border */
    border-radius: 9999px;
    height: 3rem;
    width: 3rem;
}