<div class="card" style="width: 100%; max-width: 20rem;">
    <img src="img/gallery/portfolio05.jpg" class="card-img-top" alt="...">
    <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
        <a href="#" class="btn btn-primary">Go somewhere</a>
    </div>
</div>
                                        

<div class="card" style="width: 100%; max-width: 20rem;">
    <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <h6 class="card-subtitle mb-2 text-muted">Card subtitle</h6>
        <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
        <a href="#" class="card-link">Card link</a>
        <a href="#" class="card-link">Another link</a>
    </div>
</div>
                                        

<div class="card" style="width: 100%; max-width: 20rem;">
    <ul class="list-group list-group-flush">
        <li class="list-group-item">Cras justo odio</li>
        <li class="list-group-item">Dapibus ac facilisis in</li>
        <li class="list-group-item">Vestibulum at eros</li>
    </ul>
</div>
                                        

<div class="card" style="width: 100%; max-width: 25rem;">
    <img src="img/gallery/portfolio05.jpg" class="card-img-top" alt="...">
    <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
    </div>
    <ul class="list-group list-group-flush">
        <li class="list-group-item">Cras justo odio</li>
        <li class="list-group-item">Dapibus ac facilisis in</li>
        <li class="list-group-item">Vestibulum at eros</li>
    </ul>
    <div class="card-body">
        <a href="#" class="card-link">Card link</a>
        <a href="#" class="card-link">Another link</a>
    </div>
</div>