A dark, glassy theme for your MyAnimeList list. Tune it, then paste one block of CSS into MAL.
Besides showing info, they're the invisible hover zones that make cards tilt toward your cursor. Find them in MAL's list settings (Profile menu → Settings → List).
Copy everything from your list's Custom CSS box and paste it here. The settings in it, your username, banner and background are read back into the controls. Older Prism CSS works too.