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css @media responsive width change mobile

<!DOCTYPE html>
<html>
<head>
<style>
body {
    background-color: lightblue;
}

@media screen and (min-width: 480px) {
    body {
        background-color: lightgreen;
    }
}
</style>
</head>
<body>

<h1>Resize the browser window to see the effect!</h1>
<p>The media query will only apply if the media type is screen and the viewport is 480px wide or wider.</p>

</body>
</html>

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