SVG
<img data-src="brain.svg" class="iconic iconic-sm" alt="brain">
<img data-src="brain.svg" class="iconic iconic-md" alt="brain">
<img data-src="brain.svg" class="iconic iconic-lg" alt="brain">
Default Icon Font
<span class="iconic iconic-sm" data-glyph="brain" title="brain" aria-hidden="true"></span>
<span class="iconic iconic-md" data-glyph="brain" title="brain" aria-hidden="true"></span>
<span class="iconic iconic-lg" data-glyph="brain" title="brain" aria-hidden="true"></span>
Bootstrap Icon Font
<span class="iconic iconic-brain iconic-sm" title="brain" aria-hidden="true"></span>
<span class="iconic iconic-brain iconic-md" title="brain" aria-hidden="true"></span>
<span class="iconic iconic-brain iconic-lg" title="brain" aria-hidden="true"></span>
Foundation Icon Font
<span class="fi-brain iconic-sm" title="brain" aria-hidden="true"></span>
<span class="fi-brain iconic-md" title="brain" aria-hidden="true"></span>
<span class="fi-brain iconic-lg" title="brain" aria-hidden="true"></span>