JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<div class="container-fluid pt-2">
<div class="card-columns">
<div class="card">
<img class="card-img-top" style="width:100%; height: 200px;"/>
</div>
<div class="card">
<img class="card-img-top" style="width:100%; height: 500px;"/>
</div>
<div class="card">
<img class="card-img-top" style="width:100%; height: 300px;"/>
</div>
<div class="card">
<img class="card-img-top" style="width:100%; height: 400px;"/>
</div>
<div class="card">
<img class="card-img-top" style="width:100%; height: 400px;"/>
</div>
<div class="card">
<img class="card-img-top" style="width:100%; height: 300px;"/>
</div>
<div class="card">
<img class="card-img-top" style="width:100%; height: 500px;"/>
</div>
<div class="card">
<img class="card-img-top" style="width:100%; height: 200px;"/>
</div>
<div class="card">
<img class="card-img-top" style="width:100%; height: 200px;"/>
</div>
<div class="card">
<img class="card-img-top" style="width:100%; height: 500px;"/>
</div>
<div class="card">
<img class="card-img-top" style="width:100%; height: 300px;"/>
</div>
<div class="card">
<img class="card-img-top" style="width:100%; height: 400px;"/>
</div>
</div>
</div>

CSS

.card {
  background-color: gray;
}