How to use a not:first-child selector in CSS?

This selector is used to select every element which is not the first-child of its parent element. It is represented as an argument in the form of :not(first-child) element.

Syntax:

:not( element ) {
  // CSS property
}

Example:

<!DOCTYPE html>
<html>
    <head>
        <title>not first child selector</title>
        <style>
            h1 {
            color:green;
            }
            div ul:not(:first-child) {
                background-color: green;
                color:white;
                font-style:italic;
                font-weight:bold;
                width:60%;
                margin-left:100px;
            }
            h1, h2 {
                text-align:center;
            }
        </style>
    </head>
    <body>
        <h1>GeeksforGeeks</h1>
        <h2>not:first-child selector </h2>
        <div>
            <ul style="margin-left:100px">
                <li>gfg</li>
                <li>geeks</li>
                <li>sudo</li>
            </ul>
            <ul>
                <li>Bca</li>
                <li>Mca</li>
                <li>B.Tech</li>
            </ul>
        </div>
    </body>
</html>                    

Output

Explanation: The above example shows that a <div> is a container Tag. It contains <ul> Tag so it selects all child elements of <div> tag except its first-child.