/* Replace the About-page mastodon illustration */
.about__header img {
  content: url("https://cdn.masto.host/mastjohn1126com/site_uploads/files/000/000/001/original/4829704b750a5ead.gif") !important;
}

/* Replace any Mastodon preview image (hashed filename) */
img[src*="preview-"] {
  content: url("https://cdn.masto.host/mastjohn1126com/site_uploads/files/000/000/001/original/4829704b750a5ead.gif") !important;
}