JSFiddle - React, Tailwind, and code Playground

HTML

<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>

<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>
<div class="post">
  <div>
    <h3>title</h3>
    <p>description</p>
  </div>
</div>

CSS

.post {
    float: left;
    width: 23%;
    box-shadow: 0 0 1px rgba(0,0,0,0.3);
    background-color: #fff;
    margin: 1%;
    position: relative;
    font-family: tahoma, sans-serif;
}

.post:before {content: "";padding-top: 100%;display: block;}

.post div {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: #2196F3;
}

.post div h3 {
    margin: 0;
    color: #fff;
    border-bottom: solid 1px #FFF;
    padding: 10px;
    cursor: pointer;
}

.post div p {
    padding: 10px;
    margin: 0;
    color: #FFF;
}