I would like to align links to the bottom center of cards. I tried adding the classes `d-flex` and `flex-column` to .card-body and `mt-auto` to the link, as suggested elsewhere. Note I'm not using a `container` or `container-fluid` div class (Bootstrap [documentation](https://codepen.io/nataliecardot/pen/PRMvbP) suggests going without one for an edge-to-edge design).

[![current view](https://i.stack.imgur.com/rlHq0.jpg)](https://i.stack.imgur.com/rlHq0.jpg)

Relevant HTML (for full code view [CodePen](https://codepen.io/nataliecardot/pen/PRMvbP)):

```
<div class="row portfolio">

      <div class="col-sm-12">
        <h2>Portfolio</h2>
      </div>
      <div class="col-lg-4 col-sm-6 portfolio-item">
        <div class="card h-100">
          <a href="#"><img class="card-img-top" src="http://placehold.it/700x400" alt=""></a>
          <div class="card-body d-flex flex-column">
            <h4 class="card-title">Project One</h4>
            <p class="card-text">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Amet numquam aspernatur eum quasi sapiente nesciunt? Voluptatibus sit, repellat sequi itaque deserunt, dolores in, nesciunt, illum tempora ex quae? Nihil, dolorem!</p>
            <a href="#" class="card-link text-info mt-auto">View CodePen</a>
          </div>
        </div>
      </div>
      <div class="col-lg-4 col-sm-6 portfolio-item">
        <div class="card h-100">
          <a href="#"><img class="card-img-top" src="http://placehold.it/700x400" alt=""></a>
          <div class="card-body">
            <h4 class="card-title">Project Two</h4>
            <p class="card-text">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam viverra euismod odio, gravida pellentesque urna varius vitae.</p>
            <a href="#" class="card-link text-info">View CodePen</a>
          </div>
        </div>
      </div>
      <div class="col-lg-4 col-sm-6 portfolio-item">
        <div class="card h-100">
          <a href="#"><img class="card-img-top" src="http://placehold.it/700x400" alt=""></a>
          <div class="card-body">
            <h4 class="card-title">Project Three</h4>
            <p class="card-text">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quos quisquam, error quod sed cumque, odio distinctio velit nostrum temporibus necessitatibus et facere atque iure perspiciatis mollitia recusandae vero vel quam!</p>
            <a href="#" class="card-link text-info">View CodePen</a>
          </div>
        </div>
      </div>
      <div class="col-lg-4 col-sm-6 portfolio-item">
        <div class="card h-100">
          <a href="#"><img class="card-img-top" src="http://placehold.it/700x400" alt=""></a>
          <div class="card-body">
            <h4 class="card-title">Project Four</h4>
            <p class="card-text">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam viverra euismod odio, gravida pellentesque urna varius vitae.</p>
            <a href="#" class="card-link text-info">View CodePen</a>
          </div>
        </div>
      </div>
      <div class="col-lg-4 col-sm-6 portfolio-item">
        <div class="card h-100">
          <a href="#"><img class="card-img-top" src="http://placehold.it/700x400" alt=""></a>
          <div class="card-body">
            <h4 class="card-title">Project Five</h4>
            <p class="card-text">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam viverra euismod odio, gravida pellentesque urna varius vitae.</p>
            <a href="#" class="card-link text-info">View CodePen</a>
          </div>
        </div>
      </div>
      <div class="col-lg-4 col-sm-6 portfolio-item">
        <div class="card h-100">
          <a href="#"><img class="card-img-top" src="http://placehold.it/700x400" alt=""></a>
          <div class="card-body">
            <h4 class="card-title">Project Six</h4>
            <p class="card-text">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Itaque earum nostrum suscipit ducimus nihil provident, perferendis rem illo, voluptate atque, sit eius in voluptates, nemo repellat fugiat excepturi! Nemo, esse.</p>
            <a href="#" class="card-link text-info">View CodePen</a>
          </div>
        </div>
      </div>

    </div>

```