body {
    font-size: 16px;
}

.header {
    font-size: 1.2em;
    font-weight: bold;
    color: #000;
    text-align: center;
}

.header_message {
    line-height: 26px;
    text-align: center;
    width: 100%;
}

.header_message .alert {
    margin: 0;
}

.alert-dark {
    color: #000;
    background-color: #d6d8d9;
    border-color: #c6c8ca;
}

.input-group-addon {
    font-size: 1em;
    padding: 6px 20px;
}

.form-control {
    font-size: 1em;
    padding: 10px;
    color: #000;
    height: 40px;
}

.result_message {
    width: 100%;
    text-align: center;
}

.result_message .icon {
    font-size: 6em;
    margin: 10px auto;
}

.result_message .vincode {
    font-weight: bold;
}

.result_message .desc {
    font-style: italic;
}