raspap-webgui/dist/raspap/css/style.css

 /*!
 * RaspAP-Brands Brand Icons - https://raspap.com
 * License - https://github.com/billz/RaspAP-Brands-webgui/blob/master/LICENSE
 */
@font-face {
  font-family: 'RaspAP';
  src:  url('fonts/RaspAP.eot?e76qs3');
  src:  url('fonts/RaspAP.eot?e76qs3#iefix') format('embedded-opentype'),
    url('fonts/RaspAP.ttf?e76qs3') format('truetype'),
    url('fonts/RaspAP.woff?e76qs3') format('woff'),
    url('fonts/RaspAP.svg?e76qs3#RaspAP') format('svg');
  font-weight: normal;
  font-style: normal;
  font-display: block;
}

[class^="ra-"], [class*=" ra-"] {
  /* use !important to prevent issues with browser extensions that change ..webfonts */
  font-family: 'RaspAP' !important;
  speak: none;
  font-style: normal;
  font-weight: normal;
  font-variant: normal;
  text-transform: none;
  line-height: 1;

  /* Better Font Rendering =========== */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.ra-wireguard:before {
  font-size: 1.2rem;
  content: "\e900";
  color: #d1d3e2;
  vertical-align: middle;
}

.card-header .ra-wireguard:before {
  color: #fff;
}

.sidebar .nav-item.active .nav-link
span.ra-wireguard:before {
  color: #6e707e;
}

.ra-raspap:before {
  font-size: 4.35rem;
  content: "\e901";
  color: #2b8080;
  margin-left: 0.1em;
}