Loading indicators used to show users things are happening
.wb-loader
A loading indicator used on blue or dark color background. The loader div should have text within it which will be accessible by screen-readers. The text is visually hidden from users.
<div class="wb-loader">Loading...</div>
.wb-loader--colored
Apply this modifier when then loading indiciator needs to be on a white background.
<div class="wb-loader wb-loader--colored">Loading...</div>