Change background color using css code example

Example 1: css background color

body {
  background-color: green;
}

Example 2: how to change the page background in css

body {
  /* this changes the page's background to green  */
  background-color: green;
}

Example 3: background color

//javascript type css:
document.body.style.backgroundColor = "blue";
// or inline css:
<div style="background-color: blue;"></div>