<div class="ch-clearfix"></div>
<!-- clear float -->

<div class="ch-float--left"></div>
<div class="ch-pull--left"></div>
<div class="ch-float--right"></div>
<div class="ch-pull--right"></div>
<!-- float: left and right -->

<div class="ch-relative"></div>
<div class="ch-absolute"></div>
<div class="ch-fixed"></div>
<!-- position: relative, absolute and fixed -->

<div class="ch-centered"></div>
<!-- centered block -->

<!-- Responsive eg... -->
<div class="[sl,sm,md,lg]:ch-*"></div>