understand linear gradient css code example

Example 1: linear gradient css

/* A gradient tilted 100 degrees,
   starting gray and finishing black */

.class {
    background: linear-gradient(100deg, rgba(63, 63, 63, 0.8) 0%, rgba(255, 255, 255, 0) 25%);
}

/* A gradient going from the bottom to top
   starting red and finishing orange */

.class {
    background: linear-gradient(to top, #f32b60, #ff8f1f);
}

Example 2: linear gradient css

element, .class-name {
	background-image: radial-gradient(circle at 29% 55%, hsla(329,0%,99%,0.05) 0%, hsla(329,0%,99%,0.05) 4%,transparent 4%, transparent 44%,transparent 44%, transparent 100%),radial-gradient(circle at 85% 89%, hsla(329,0%,99%,0.05) 0%, hsla(329,0%,99%,0.05) 51%,transparent 51%, transparent 52%,transparent 52%, transparent 100%),radial-gradient(circle at 6% 90%, hsla(329,0%,99%,0.05) 0%, hsla(329,0%,99%,0.05) 53%,transparent 53%, transparent 64%,transparent 64%, transparent 100%),radial-gradient(circle at 35% 75%, hsla(329,0%,99%,0.05) 0%, hsla(329,0%,99%,0.05) 6%,transparent 6%, transparent 98%,transparent 98%, transparent 100%),radial-gradient(circle at 56% 75%, hsla(329,0%,99%,0.05) 0%, hsla(329,0%,99%,0.05) 16%,transparent 16%, transparent 23%,transparent 23%, transparent 100%),radial-gradient(circle at 42% 0%, hsla(329,0%,99%,0.05) 0%, hsla(329,0%,99%,0.05) 3%,transparent 3%, transparent 26%,transparent 26%, transparent 100%),radial-gradient(circle at 29% 28%, hsla(329,0%,99%,0.05) 0%, hsla(329,0%,99%,0.05) 51%,transparent 51%, transparent 75%,transparent 75%, transparent 100%),radial-gradient(circle at 77% 21%, hsla(329,0%,99%,0.05) 0%, hsla(329,0%,99%,0.05) 35%,transparent 35%, transparent 55%,transparent 55%, transparent 100%),radial-gradient(circle at 65% 91%, hsla(329,0%,99%,0.05) 0%, hsla(329,0%,99%,0.05) 46%,transparent 46%, transparent 76%,transparent 76%, transparent 100%),linear-gradient(45deg, rgb(83, 91, 235),rgb(76, 11, 174));
}