A modern, pure CSS, responsive Slack inspired navigation.
Slackie offers its code in Sass and CSS.
At this point in time you can download the CSS from Github or use it directly from my website.
<link rel="stylesheet" href="http://www.nielsklom.eu/slackie/slackie.min.css">CDN COMING SOON
You can find the Sass files on Github in the src folder.
I recommend using Koala, a GUI Sass compiler, if you are not comfortable with the ruby way. For more information visit the Sass Homepage.
Old School
<link rel="stylesheet" href="../path_to/your_css/slackie.css">Async
<link rel="preload" href="../path_to/your_css/slackie.css" as="style" onload="this.rel='stylesheet'">Warning: Experimental Feature