@media (max-width: 768px) {
    div.wpforms-container-full .wpforms-form {
        flex-direction: column !important;
    }
    div.wpforms-container-full .wpforms-form input[type="email"] {
        border-right: 1px solid #ccc !important;
        margin-bottom: 10px !important;
    }
    div.wpforms-container-full .wpforms-form button.wpforms-submit {
        width: 100% !important;
    }
}