<style>
    @media only screen and (max-width: 1000px) {
        body {
            background-color: red;
            font-size: 14px;
        }
        .container {
            padding: 10px;
        }
        .header {
            font-size: 20px;
            text-align: center;
        }
        .button {
            width: 100%;
            padding: 15px;
            font-size: 16px;
        }
    }

    body {
            background-color: lightblue;
            font-size: 14px;
        }
</style>