<div class="uscb-margin-L-12">12px left margin</div>
<div class="uscb-margin-TB-20">20px top and bottom margin</div>
<div class="uscb-padding-6">6px full padding</div>
<div class="uscb-padding-gt-s-2">2px full padding at screen sizes greater than 576px</div>
<div class="uscb-padding-T-lg-25">25px top padding at screen sizes between 992px and 1200px</div>