<!-- Bootstrap -->
<a href="#" class="btn btn-info">Link Button</a>

<!-- TailwindCSS -->
<a href="#" class="bg-blue-500 hover:bg-blue-700 text-white font-bold hover:no-underline py-2 px-4">Link Button</a>


html, body {
    height: 100%;
}

html {
    display: table;
    margin: auto;
}

body {
    display: table-cell;
    vertical-align: middle;
}

External CSS

  1. https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.4.1/css/bootstrap.min.css
  2. https://cdnjs.cloudflare.com/ajax/libs/tailwindcss/1.2.0/tailwind.min.css

External JavaScript

This Pen doesn't use any external JavaScript resources.