<div class="container">
  <div class="element">
    Let's <a href="http://movethewebforward.org/" class="external">Move The Web Forward</a> together!
  </div>
</div>
body {
  color: #555;
  font-size: 1.5em;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

hr {
  margin: 50px 0;
}

.container {
  margin: 40px auto;
  max-width: 700px;
}

.element {
  padding: 20px;
}

a {
  color: deepPink;
}

.external::after {
  content: url(http://tympanus.net/codrops-playground/assets/images/cssref/pseudo/after/external-link.png);
  padding-left: 5px;
}