Demo_MediaQuery.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CSS Media Query</title>

    <style>
        body {
            background-color: tan;
            color: black;
        }
        /* On scrren Size less than 992px color should be blue */
        
        @media screen and (max-width: 992px) {
            body {
                background-color: rgb(91, 73, 109);
                color: whitesmoke;
            }
        }
        
        @media screen and (max-width: 600px) {
            body {
                background-color: olive;
                color: antiquewhite;
            }
        }
    </style>
</head>

<body>
    <h1> Resize the browser window to see the action created by Media Query .... </h1>

    <p> by Default the Background color of the document is "tan"</p>
    <section>
        <p>if the Scren Size id less than 992Px or less color will change to blue</p>
        <p> of the screen Size is less than 600px , so it will change to olive</p>
    </section>
</body>

</html>