giving homepage background image css code example

Example 1: background image css

.selector {
  background-image: url(image.png);
}

Example 2: add background image in css

.w {
background-image: url("images/tom1.png");
}

.a {
background-image: url("images/tom2.png");
}

.s {
background-image: url("images/tom3.png");
}