:root {
  --shape1: url(./images/CatSquare.svg);
  --shape2: url(./images/CatCircle.svg);
  --shape3: url(./images/CatTriangle.svg);
  --shape4: url(./images/CatHexagon.svg);

  --patternOpacity: .3;
}

wallpaper.square {
  background-image: url(../images/CatSquare.svg);
}

wallpaper.circle {
  background-image: url(../images/CatCircle.svg);
}

wallpaper.triangle {
  background-image: url(../images/CatTriangle.svg);
}

wallpaper.hexagon {
  background-image: url(../images/CatHexagon.svg);
}