<div class="d-flex flex-xxl-wrap-reverse bg-secondary p-1" style="width: 100px;">
        <div class="p-3 bg-info">1</div>
        <div class="p-3 bg-warning">2</div>
        <div class="p-3 bg-primary">3</div>
        <div class="p-3 bg-success">4</div>
    </div>You don't need to remember all CSS classes. Just use the Bootstrap Editor instead.