SVG inline

Simply copy/paste this into your HTML:

<svg class="humbleicons hi-book-open" xmlns="http://www.w3.org/2000/svg" width="24" height="24" fill="none" viewBox="0 0 24 24"><path stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8.618V17.5m0-8.882a1 1 0 0 0-.553-.894l-.491-.246a7 7 0 0 0-4.12-.669l-.773.11A8 8 0 0 1 4.93 7H4v10h.38a8 8 0 0 0 2.197-.308l.553-.158a5 5 0 0 1 3.61.336l1.26.63m0-8.882a1 1 0 0 1 .553-.894l.491-.246a7 7 0 0 1 4.12-.669l.773.11c.375.054.753.081 1.131.081H20v10h-.38a8 8 0 0 1-2.197-.308l-.553-.158a5 5 0 0 0-3.61.336L12 17.5"/></svg>

SVG sprite

Download the sprite file and address the icon by its slug:

<svg class="humbleicons"><use xlink:href="humbleicons.svg#book-open"/></svg>