#logo {
    width: 13%;
}

#logo img {
    max-height: 190px;
    min-height: 150px;
}

@media only screen and (max-width: 780px) {
    #logo {
        width: 25%;
    }
}

@media only screen and (max-width: 680px) {
    #logo {
        width: 90%;
    }
}