#banner {
    /*background-color: red; color: white*/
}
#logo {
    max-height: 220px;
}
main {
    /*max-width: 1000px;
    margin: auto;*/
}
#main-nav {
    font-family: "Courier 10 Pitch, serif";
    font-size: 1.2em;
}


@media (min-width: 1000px) { /* 768 */
    /* CSS rules go here */
    #main-nav {
        background-color: #f0f0f5;
        border: 1px solid green;
        border-radius: 10px;
    }
}