Mastodon custom CSS overrides in admin panel

custom.css

/* override weird Mastodon font with default system stack */
body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, Segoe UI, Oxygen, Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, "mastodon-font-sans-serif", sans-serif !important;
}

/* hide create account buttons (just for aesthetics, NOT security!) */
.columns-area__panels .navigation-panel .navigation-panel__sign-in-banner .sign-in-banner button:last-of-type,
.ui__header .ui__header__links a.button[href^="https://joinmastodon.org"] {
  display: none !important;
}