#image {
    display: block;
    margin-left: auto;
    margin-right: auto;
    height: 400px;
    max-width: 100%;
}

#image-nav {
    display: block;
    margin: auto;
}

label {
    font-weight: normal;
}

.form-section {
    margin-bottom: 10px;
}

.container {
    margin-bottom: 100px;
}

input[type=button] {
    background-color: #ccc;
}

input[type=button]:disabled {
    background-color: #999;
}