jitsi-meet/css/modals/invite/_add-people.scss

/**
 * Styles errors and links in the AddPeopleDialog.
 */
.modal-dialog-form {
    .add-people-form-wrap {

        .error {
            padding-left: 5px;

            a {
                padding-left: 5px;
            }
        }

        .add-telephone-icon {
            transform: scaleX(-1);
        }
    }
}

/**
 * Styles errors in the MultiSelectAutocomplete.
 */
.autocomplete-error {
    min-width: 260px;
}