In the 3.4.0 version of Bootstrap, I am facing an issue where cards are not showing borders. I am attempting to include multiple cards within a panel.
I have tried using the "!important" property for the border, as well as using classes like "border-primary" and "mb-3."
<div class="panel panel-default">
<div class="panel-heading" style="height: 30px; padding: 5px">
<h4 class="panel-title">
<a class="accordion-toggle" role="button" data-toggle="collapse" data-target="#collapse4" aria-expanded="false" style="font-size: 20px; padding: 0 20px" aria-controls="collapse4">
Features </a>
</h4>
</div>
<div id="collapse4" class="panel-collapse collapse in">
<div class="row">
<div class="col-sm-6" style="padding-left:30px">
<div class="card border-primary mb-3">
<div class="card-body">
<h5 class="card-title">Special title treatment</h5>
<p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
</div>
</div>
</div>
<div class="col-sm-6">
<div class="card border-primary mb-3">
<div class="card-body">
<h4 class="card-title">Special title treatment</h4>
<p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
</div>
</div>
</div>
</div>
</div>
</div>
I am in need of a solution to display cards with borders in Bootstrap.