body {
    background: url(/static/img/bg0.jpg) no-repeat center center fixed;
    background-size: cover;
}

#main {
    width: 250px;
    max-width: 250px;
}

#main > p:last-of-type {
    padding-top: 0px;
}

form > input:not([type="submit"]) {
    margin: 5px;
    max-width: 200px;
}

form > input:last-child {
    width: 40%;
    margin: 10px auto 20px auto;
}