Turn an image into a card background and overlay your card's text. Depending on the image, you may or may not need additional styles or utilities.
{% example html %}
-<div class="card text-white">
+<div class="card bg-dark text-white">
<img class="card-img" data-src="holder.js/100px270/#55595c:#373a3c/text:Card image" alt="Card image">
<div class="card-img-overlay">
<h4 class="card-title">Card title</h4>
min-width: 0;
word-wrap: break-word;
background-color: $card-bg;
+ background-clip: border-box;
border: $card-border-width solid $card-border-color;
@include border-radius($card-border-radius);
}