/* Exact smoothing in Electron; progressive enhancement in web browsers.
   CSS squircle is an approximation, not a percentage mapping. */
@supports (-electron-corner-smoothing: 75%) {
  *, *::before, *::after {
    -electron-corner-smoothing: 75%;
    corner-shape: round;
  }
}

@supports not (-electron-corner-smoothing: 75%) {
  @supports (corner-shape: squircle) {
    *, *::before, *::after { corner-shape: squircle; }
  }
}