/* Centreer het formulier en de omringende Drupal-veldcontainer */
.field--name-webform,
.field__item > form.webform-submission-form {
    width: 90% !important;
    max-width: 500px !important;
    margin-left: auto !important;
    margin-right: auto !important;
    float: none !important;
    display: block !important;
}