Live Demo: Example of CSS Media Queries

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Example of CSS Media Queries</title>
<style>
    /* Smartphones (portrait and landscape) ---------- */
    @media screen and (min-width: 320px) and (max-width: 480px){
        body{
			background: #7ce7e1;
		}
    }
    /* Smartphones (portrait) ---------- */
    @media screen and (max-width: 320px){
        body{
			background: #ffd280;
		}
    }
    /* Smartphones (landscape) ---------- */
    @media screen and (min-width: 321px){
        body{
			background: #9ddfbb;
		}
    }
    /* tablets, iPads (portrait and landscape) ---------- */
    @media screen and (min-width: 768px) and (max-width: 1024px){
        body{
			background: #ffb497;
		}
    }
    /* tablets, iPads (portrait) ---------- */
    @media screen and (min-width: 768px){
        body{
			background: #f0e68c;
		}
    }
    /* tablets, iPads (landscape) ---------- */
    @media screen and (min-width: 1024px){
        body{
			background: #d6b3f4;
		}
    }
    /* Desktops and laptops ---------- */
    @media screen and (min-width: 1224px){
        body{
			background: #d8ff9d;
		}
    }
    /* Large screens ---------- */
    @media screen and (min-width: 1824px){
        body{
			background: #ffc0cb;
		}
    }
</style>
</head>
<body>
    <h1>CSS Media Queries</h1>
    <p>The background of the output area is different in different media or devices.</p>
    <p><strong>Alternative:</strong> You can also see the effect of this media query by opening the output in a new window and resize it to different sizes.</p>
</body>
</html>