Bootstrap 4: cards as grid with the same height and width

Question

I\'m trying to order cards in a grid with the same height and width. These cards will have different content with different sizes. They should also go by 3 in each row. It is OK

Answer 1

You can simply define the width of a card (style="width: 18rem;" in the example below) and then use the col-auto class for the columns plus the something like mb-3 (margin-bottom 3 units) for a margin at the bottom. That's it.

And if you wanted to center-align them neatly, you could add the justify-content-center to the row. Or maybe try the justify-content-between class if you like that better.

Edit:

I'm adding a second version further down below...

Here's a working code snippet:

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>

<div class="container mt-4">
    <div class="row">
        <div class="col-auto mb-3">
            <div class="card" style="width: 18rem;">
                <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>
        <div class="col-auto mb-3">
            <div class="card" style="width: 18rem;">
                <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>
        <div class="col-auto mb-3">
            <div class="card" style="width: 18rem;">
                <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>
        <div class="col-auto mb-3">
            <div class="card" style="width: 18rem;">
                <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>
        <div class="col-auto mb-3">
            <div class="card" style="width: 18rem;">
                <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>
        <div class="col-auto mb-3">
            <div class="card" style="width: 18rem;">
                <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>
        <div class="col-auto mb-3">
            <div class="card" style="width: 18rem;">
                <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>
    </div>
</div>

Second version:

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>

<div class="container mt-3">
    <div class="row">
        <div class="card-deck">
            <div class="card mb-4" style="min-width: 18rem; max-width: 18rem;">
                <img class="card-img-top" src="https://placehold.it/280x140/abc" alt="Card image cap">
                <div class="card-body">
                    <h5 class="card-title">Card title</h5>
                    <p class="card-text">This is a longer card <br> with <br> supporting <br> text below <br> as a natural lead-in to additional content. This content is a little bit longer.</p>
                    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
            </div>
            <div class="card mb-4" style="min-width: 18rem; max-width: 18rem;">
                <img class="card-img-top" src="https://placehold.it/280x140/bca" alt="Card image cap">
                <div class="card-body">
                    <h5 class="card-title">Card title</h5>
                    <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
                    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
            </div>
            <div class="card mb-4" style="min-width: 18rem; max-width: 18rem;">
                <img class="card-img-top" src="https://placehold.it/280x140/bb4" alt="Card image cap">
                <div class="card-body">
                    <h5 class="card-title">Card title</h5>
                    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This <br> card <br> has <br> even longer <br> content <br> than <br> the first <br> to show <br> that equal height action.</p>
                    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
            </div>
            <div class="card mb-4" style="min-width: 18rem; max-width: 18rem;">
                <img class="card-img-top" src="https://placehold.it/280x140/54a" alt="Card image cap">
                <div class="card-body">
                    <h5 class="card-title">Card title</h5>
                    <p class="card-text">This is a longer card <br> with <br> supporting <br> text below <br> as a natural lead-in to additional content. This content is a little bit longer.</p>
                    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
            </div>
            <div class="card mb-4" style="min-width: 18rem; max-width: 18rem;">
                <img class="card-img-top" src="https://placehold.it/280x140/f0a" alt="Card image cap">
                <div class="card-body">
                    <h5 class="card-title">Card title</h5>
                    <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
                    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
            </div>
            <div class="card mb-4" style="min-width: 18rem; max-width: 18rem;">
                <img class="card-img-top" src="https://placehold.it/280x140/aa0" alt="Card image cap">
                <div class="card-body">
                    <h5 class="card-title">Card title</h5>
                    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This <br> card <br> has <br> even longer <br> content <br> than <br> the first <br> to show <br> that equal height action.</p>
                    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
            </div>
            <div class="card mb-4" style="min-width: 18rem; max-width: 18rem;">
                <img class="card-img-top" src="https://placehold.it/280x140/f00" alt="Card image cap">
                <div class="card-body">
                    <h5 class="card-title">Card title</h5>
                    <p class="card-text">This is a longer card <br> with <br> supporting <br> text below <br> as a natural lead-in to additional content. This content is a little bit longer.</p>
                    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
            </div>
            <div class="card mb-4" style="min-width: 18rem; max-width: 18rem;">
                <img class="card-img-top" src="https://placehold.it/280x140/090" alt="Card image cap">
                <div class="card-body">
                    <h5 class="card-title">Card title</h5>
                    <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
                    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
            </div>
            <div class="card mb-4" style="min-width: 18rem; max-width: 18rem;">
                <img class="card-img-top" src="https://placehold.it/280x140/ff0" alt="Card image cap">
                <div class="card-body">
                    <h5 class="card-title">Card title</h5>
                    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This <br> card <br> has <br> even longer <br> content <br> than <br> the first <br> to show <br> that equal height action.</p>
                    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
                </div>
            </div>
        </div>
    </div>
</div>