JSFiddle - React, Tailwind, and code Playground

by Zaiste

HTML

<script src="//code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<link rel="stylesheet" href="//stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="//stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css">
<!-- 
  Bootstrap docs: https://getbootstrap.com/docs
-->
<div class="container">
  <div class="row">

<div class="btn-group">

  <a href='#' class="btn btn-secondary">
    <i class="fa fa-fw fa-sm fa-font vertical-align-middle" style=" vertical-align: middle;"></i>
  </a>

  <a href='#' class="btn btn-secondary">
    <i class="fa fa-fw fa-lg fa-font" style=" vertical-align: middle;"></i>
  </a>

  <span href='#' class="btn btn-secondary">
    <i class="fa fa-fw fa-2x fa-font"></i>
  </span>
</div>
</div>

<div class="row">

<div class="btn-group">
<a href="#" class="btn btn-secondary">Small</a>
<a href="#" class="btn btn-secondary">Large</a>
  
</div>
  
</div>


<div class="d-block">

  <span>
    <i class="fas fa-fw fa-sm fa-font" style=" vertical-align: middle;"></i>
  </span>

  <span>
    <i class="fas fa-fw fa-lg fa-font" style=" vertical-align: middle;"></i>
  </span>

  <span>
    <i class="fas fa-fw fa-2x fa-font" style=" vertical-align: middle;"></i>
  </span>
</div>

</div>
</div>

CSS

.row {
  background: #f8f9fa;
  margin-top: 20px;
}

.col {
  border: solid 1px #6c757d;
  padding: 10px;
}