<title>Bootstrap 4 Cards Contextual Background and Color Styles</title>
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<div class="card bg-primary text-white" style="width:18rem;">
<div class="card-header">Card Header</div>
<h5 class="card-title">Primary Card Title</h5>
<p class="card-text">This is the text content within card.</p>
<div class="card-footer">Card Footer</div>
<div class="card bg-secondary text-white mt-3" style="width:18rem;">
<div class="card-header">Card Header</div>
<h5 class="card-title">Secondary Card Title</h5>
<p class="card-text">This is the text content within card.</p>
<div class="card-footer">Card Footer</div>
<div class="card bg-success text-white mt-3" style="width:18rem;">
<div class="card-header">Card Header</div>
<h5 class="card-title">Success Card Title</h5>
<p class="card-text">This is the text content within card.</p>
<div class="card-footer">Card Footer</div>
<div class="card bg-danger text-white mt-3" style="width:18rem;">
<div class="card-header">Card Header</div>
<h5 class="card-title">Danger Card Title</h5>
<p class="card-text">This is the text content within card.</p>
<div class="card-footer">Card Footer</div>
<div class="card bg-warning text-white mt-3" style="width:18rem;">
<div class="card-header">Card Header</div>
<h5 class="card-title">Warning Card Title</h5>
<p class="card-text">This is the text content within card.</p>
<div class="card-footer">Card Footer</div>
<div class="card bg-info text-white mt-3" style="width:18rem;">
<div class="card-header">Card Header</div>
<h5 class="card-title">Info Card Title</h5>
<p class="card-text">This is the text content within card.</p>
<div class="card-footer">Card Footer</div>
<div class="card bg-light mt-3" style="width:18rem;">
<div class="card-header">Card Header</div>
<h5 class="card-title">Light Card Title</h5>
<p class="card-text">This is the text content within card.</p>
<div class="card-footer">Card Footer</div>
<div class="card bg-dark text-white mt-3" style="width:18rem;">
<div class="card-header">Card Header</div>
<h5 class="card-title">Dark Card Title</h5>
<p class="card-text">This is the text content within card.</p>
<div class="card-footer">Card Footer</div>