:root,
[data-md-color-scheme="default"] {
  --custom-shadow-color: #000000aa;
}

:root,
[data-md-color-scheme="dark"] {
  --custom-shadow-color: #7e56c2aa;
}

img {
  filter: drop-shadow(0px 0px 0.5em var(--custom-shadow-color));
}