/* CSS */
h1{
    text-align: center;
}

#wrapper{
    max-width: 480px;
    margin: 0px auto 0px auto;
    padding: 15px;
}

#msg{
    margin: 0px; padding: 10px;
    background-color: lightgray;
    text-align: center;
}

#canvas{
    width: 100%; height: auto;
    margin-bottom: 30px;
}