only for box background color css code example
Example 1: how to change background color in css
body{
background: lightblue;
}
Example 2: fill color behid text in html
Option 1
display: table;
no parent required
h1 {
display: table; /* keep the background color wrapped tight */
margin: 0px auto 0px auto; /* keep the table centered */
padding:5px;font-size:20px;background-color:green;color:#ffffff;
}
<h1>The Last Will and Testament of Eric Jones</h1>