pics constant

List<String> const pics = const <String> ["assets/img/beer_2.jpg", "assets/img/pasta.jpeg", "assets/img/kittens.jpeg"]

Background images for the cards

Implementation 

static const List<String> pics = const <String>[
  "assets/img/beer_2.jpg",
  "assets/img/pasta.jpeg",
  "assets/img/kittens.jpeg"
]