Tron Loader in SASS. Just a fun little mixin I created based off a loader from http://www.alessioatzeni.com/wp-content/tutorials/html-css/CSS3-loading-animation-loop/index.html
[SASS]
+tron($color: #2187e7, $class: ".tron", $width: 30px, $height: 30px, $speed: 1s)
[HTML]
<div class="tron"></div>