how to reduce the gradient in css code example

Example 1: css color gradient background full height

html {
    height: 100%;
}
body {
    height: 100%;
    margin: 0;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

Example 2: html css background linear-gradient

#background {
  background-image: linear-gradient(to left, #4B2C4C , #151F28);
}