CSS Customization - how to change color of post text link and add "link icon" to all links

This article explains how to change all post links into design like this:

You can use CSS code below:

.post-content a:after { font-family: FontAwesome; content: "\f08e"; display: inline-block; padding: 0 3px; vertical-align: middle; }

.post-content a:hover { color:#29aae3!important; }