.webform-confirmation-modal .ui-widget-header {
  border: none;
  background-color: transparent;
}
.webform-confirmation-modal .ui-widget-content {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
}
.webform-confirmation-modal .ui-dialog-titlebar-close {
  font-size: 1.2rem;
  color: white;
  background: black;
  width: auto;
  height: auto;
  padding: 0 0.5rem;
  border: none;
}
.webform-confirmation-modal .ui-dialog-titlebar-close::after {content: '×';}