.footer {
    background-color: #f5f5f5;
}
.form-index {
    width: 100%;
    max-width: 330px;
    padding: 15px;
    margin: auto;
}
.form-doc {
    width: 100%;
    padding: 15px;
    margin: auto;
}
main {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
}