w3schools background code example
Example 1: css background image
background-image: url("image.png");
background-position: center;
background-repeat: no-repeat;
background-size: cover;
Example 2: css change background color of page
/* Use the following code: */
html {background-color: #fefefe;}
/* You can change the hexedecimal code to RGB, RGBA, name & more colors!*/
Example 3: how to change background color in css
body{
background: lightblue;
}