.back-in-stock-notify-form {
    margin-top: 20px;
}
.back-in-stock-notify-form input, .back-in-stock-notify-form button {
    margin: 5px 0;
    padding: 10px;
    width: auto;
}
.back-in-stock-notify-form button {
    background-color: #007cba;
    color: white;
    border: none;
    cursor: pointer;
}