html {
    margin: auto;
    max-width: 500px;
    padding-top: 30px;
}

#next, #submit {
    margin-left: 10%;
    margin-right: 10%;
    width: 80%;
}

.back {
    margin-top: 10px;
    text-align: center;
}

#box {
    margin-left: 10%;
    margin-right: 10%;
    width: 80%;
}

a {
    color: #959595;
    text-align: center;
    text-decoration: none;
}

a:hover {
    color: #959595;
    text-decoration: underline;
}

footer {
    margin-top: 20px;
    color: #959595;
    text-align: center;
}

.result {
    text-align: center;
}

img {
    height: auto;
    margin-left: 20%;
    margin-right: 20%;
    width: 60%;
    text-align: center;
    margin-bottom: 20px;
}