Million of colors Gradient

background-image: linear-gradient(
    90.5deg,
    rgba(255,0,0,1) 8.7%, rgba(255,79,0,1) 11.7%, rgba(255,164,0,1) 14.7%, rgba(255,248,0,1) 17.5%, rgba(178,255,0,1) 21%, rgba(72,255,0,1) 24.3%, rgba(0,255,102,1) 28.1%, rgba(0,229,255,1) 31.8%, rgba(0,149,255,1) 35.8%, rgba(0,102,255,1) 39.9%, rgba(0,65,255,1) 45%, rgba(56,0,255,1) 49.4%, rgba(114,0,255,1) 53.6%, rgba(172,0,255,1) 57.5%, rgba(225,0,255,1) 61.7%, rgba(255,0,237,1) 65.7%, rgba(255,0,132,1) 69.1%, rgba(255,0,106,1) 72.5%, rgba(255,0,47,1) 76.3%, rgba(255,0,0,0.8) 81.2%, rgba(255,0,0,0.6) 85.8%, rgba(255,0,0,0.42) 89.6%, rgba(255,0,0,0.13) 93.1%
);