body:before {
  content: url("https://randomcard.onrender.com/images/clubs/aceClubs.png"),
    url("https://randomcard.onrender.com/images/clubs/2Clubs.png"),
    url("https://randomcard.onrender.com/images/clubs/3Clubs.png"),
    url("https://randomcard.onrender.com/images/clubs/4Clubs.png"),
    url("https://randomcard.onrender.com/images/clubs/5Clubs.png"),
    url("https://randomcard.onrender.com/images/clubs/6Clubs.png"),
    url("https://randomcard.onrender.com/images/clubs/7Clubs.png"),
    url("https://randomcard.onrender.com/images/clubs/8Clubs.png"),
    url("https://randomcard.onrender.com/images/clubs/9Clubs.png"),
    url("https://randomcard.onrender.com/images/clubs/10Clubs.png"),
    url("https://randomcard.onrender.com/images/clubs/queenClubs.png"),
    url("https://randomcard.onrender.com/images/clubs/jackClubs.png"),
    url("https://randomcard.onrender.com/images/clubs/kingClubs.png"),
    url("https://randomcard.onrender.com/images/diamonds/aceDiamonds.png"),
    url("https://randomcard.onrender.com/images/diamonds/2Diamonds.png"),
    url("https://randomcard.onrender.com/images/diamonds/3Diamonds.png"),
    url("https://randomcard.onrender.com/images/diamonds/4Diamonds.png"),
    url("https://randomcard.onrender.com/images/diamonds/5Diamonds.png"),
    url("https://randomcard.onrender.com/images/diamonds/6Diamonds.png"),
    url("https://randomcard.onrender.com/images/diamonds/7Diamonds.png"),
    url("https://randomcard.onrender.com/images/diamonds/8Diamonds.png"),
    url("https://randomcard.onrender.com/images/diamonds/9Diamonds.png"),
    url("https://randomcard.onrender.com/images/diamonds/10Diamonds.png"),
    url("https://randomcard.onrender.com/images/diamonds/jackDiamonds.png"),
    url("https://randomcard.onrender.com/images/diamonds/queenDiamonds.png"),
    url("https://randomcard.onrender.com/images/diamonds/kingDiamonds.png"),
    url("https://randomcard.onrender.com/images/hearts/aceHearts.png"),
    url("https://randomcard.onrender.com/images/hearts/2Hearts.png"),
    url("https://randomcard.onrender.com/images/hearts/3Hearts.png"),
    url("https://randomcard.onrender.com/images/hearts/4Hearts.png"),
    url("https://randomcard.onrender.com/images/hearts/5Hearts.png"),
    url("https://randomcard.onrender.com/images/hearts/6Hearts.png"),
    url("https://randomcard.onrender.com/images/hearts/7Hearts.png"),
    url("https://randomcard.onrender.com/images/hearts/8Hearts.png"),
    url("https://randomcard.onrender.com/images/hearts/9Hearts.png"),
    url("https://randomcard.onrender.com/images/hearts/10Hearts.png"),
    url("https://randomcard.onrender.com/images/hearts/jackHearts.png"),
    url("https://randomcard.onrender.com/images/hearts/queenHearts.png"),
    url("https://randomcard.onrender.com/images/hearts/kingHearts.png"),
    url("https://randomcard.onrender.com/images/spades/aceSpades.png"),
    url("https://randomcard.onrender.com/images/spades/2Spades.png"),
    url("https://randomcard.onrender.com/images/spades/3Spades.png"),
    url("https://randomcard.onrender.com/images/spades/4Spades.png"),
    url("https://randomcard.onrender.com/images/spades/5Spades.png"),
    url("https://randomcard.onrender.com/images/spades/6Spades.png"),
    url("https://randomcard.onrender.com/images/spades/7Spades.png"),
    url("https://randomcard.onrender.com/images/spades/8Spades.png"),
    url("https://randomcard.onrender.com/images/spades/9Spades.png"),
    url("https://randomcard.onrender.com/images/spades/10Spades.png"),
    url("https://randomcard.onrender.com/images/spades/jackSpades.png"),
    url("https://randomcard.onrender.com/images/spades/queenSpades.png"),
    url("https://randomcard.onrender.com/images/spades/kingSpades.png");
}

body::before {
  content: url("https://web.dev/preload-responsive-images/example-1-before.png"),
    url("https://randomcard.onrender.com/images/clubs/aceClubs.png");
  visibility: hidden;
  z-index: -99;
  position: absolute;
  left: 1000px;
}

body {
  background: url("https://web.dev/preload-responsive-images/example-1-before.png")
    no-repeat -9999px -9999px;
  background: url("https://randomcard.onrender.com/images/spades/9Spades.png")
    no-repeat -9999px -9999px;
}