apis/scaladoc-1.0.0/styles/social-links.css

.theme-dark footer .social-icon {
  /* "Poor man's dark mode" for images.
   * This works great with black images,
   * and just-okay with colored images.
   */
  filter: invert(100%) hue-rotate(180deg);
}

.social-icon {
  padding-right: 5px;
  padding-left: 5px;
}

.social-icon img {
  height: 20px;
  width: 20px;
}