JSFiddle - React, Tailwind, and code Playground

HTML

<h1>Sites sobre front-end</h1>
<a href="http://tableless.com.br/">Tableless</a>
<a href="http://loopinfinito.com.br">Loop Infinito</a>
<a href="http://pinceladasdaweb.com.br">Pinceladas da Web</a>
<a href="http://braziljs.com.br">BrasilJS</a>
<a href="http://maujor.com">Maujor</a>

CSS

h1 {text-align: center;}

a {
    display: block;
    text-decoration: none;
    width: 55%;
    margin: 0 auto 20px;
    font: 12px arial, tahoma, sans-serif;
    color: #000;
}

a::after {
    content: attr(href);
    vertical-align: middle;
    color: #000;
    background: #4679bd;
    padding: 5px;
    margin-left: 10px;
    border-radius: 5px;
    float: right;
    color: #FFF;
    box-shadow: 0 0 5px 0 rgba(0,0,0,0.4);
}

a:hover::after {
    background: orange;
    color: #000;
    transition: all .5s;
}
}