.altp-form-confirm, .alt-webform-follow-us .altp-form-stretch {
        max-width: 100%;
        margin: 0 auto;
}

@media only screen and (min-width: 800px) {
    .altp-form-confirm, .alt-webform-follow-us .altp-form-stretch {
        max-width: 50% !important;
    }
}