css background color thickness code example

Example 1: how to cover full image in css

body {
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

Example 2: how to give 2 different background color css

background: repeating-linear-gradient(#74ABDD, #74ABDD 49.9%, #498DCB 50.1%, #498DCB 100%);