div.admonition.admonition-youtube {
    border-color: hsl(0, 100%, 50%); /* YouTube red */
  }
  div.admonition.admonition-youtube > .admonition-title:before {
    background-color: hsl(0, 99%, 18%);
  }
  div.admonition.admonition-youtube > .admonition-title:after {
    color: hsl(0, 100%, 50%);
    content: "\f26c"; /* fa-solid fa-tv */
  }
  div.admonition.admonition-youtube > .admonition-title {
    color: white;
  }