how to add linear-gradient to fill in html 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: how to insert gradient in css

body{
  background-image: linear-gradient(45.34deg, #EA52F8 5.66%, #0066FF 94.35%);
}