.trumbowyg-youtube-button {
    background:url("/bundles/weedesigntrumbowyg/trumbowyg/plugins/youtube/ui/icons/youtube.svg") !important;
    background-size: 58% !important;
    background-repeat: no-repeat !important;
    background-position: center !important;
}
.weedesign-youtube {
    border:1px solid #c00;
    background:#f5f5f5;
    color: #111;
    text-align:center;
    text-transform:uppercase;
    padding:10px;
    &:after {
      content:"YouTube";
    }
  }