@media only screen and (max-device-width:480px) {
    html, body {
        font: x-large verdana,arial,helvetica,sans-serif;
        width: 480px;
    }

    input[type=text] {
        width: 100%;
    }

    img {
        width: 75%;
        max-width: 400px;
        height: auto;
    }

    #content {
        width: 480px;
    }

    #prev,
    #next {
        width: 40px;
    }

    #prev img,
    #next img {
        width: 40px;
        height: auto;
        margin-top: -20px;
        margin-left: -20px;
    }

    #displayCase {
        width: 390px;
        padding: 5px;
    }
}