body {
  height: 100vh;
  background: repeating-linear-gradient(
    135deg,
    #D50000,
    #D50000 20px,
    #C51162 20px,
    #C51162 40px,
    #AA00FF 40px,
    #AA00FF 60px,
    #6200EA 60px,
    #6200EA 80px,
    #304FFE 80px,
    #304FFE 100px,
    #2962FF 100px,
    #2962FF 120px,
    #0091EA 120px,
    #0091EA 140px,
    #00B8D4 140px,
    #00B8D4 160px,
    #00BFA5 160px,
    #00BFA5 180px,
    #00C853 180px,
    #00C853 200px,
    #64DD17 200px,
    #64DD17 220px,
    #AEEA00 220px,
    #AEEA00 240px,
    #FFD600 240px,
    #FFD600 260px,
    #FFAB00 260px,
    #FFAB00 280px,
    #FF6D00 280px,
    #FF6D00 300px,
    #DD2C00 300px,
    #DD2C00 320px
  );
}