SVG inline

Simply copy/paste this into your HTML:

<svg class="humbleicons hi-microphone-off" 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="m4 4 16 16M6.5 10.5A5.5 5.5 0 0 0 12 16v4m-4 0h4m0 0h4M9.5 9V6.5a2.5 2.5 0 0 1 5 0v4a2.5 2.5 0 0 1-1.5 2.292m4.5-2.292c0 1.93-.803 3.523-2.309 4.504"/></svg>

SVG sprite

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

<svg class="humbleicons"><use xlink:href="humbleicons.svg#microphone-off"/></svg>