dialog > .portal-dialog-closebar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: flex-end;
  height: 44px;
  margin: 0 0 8px;
  background: #fff;
  flex-shrink: 0;
}
dialog .portal-dialog-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  min-width: 44px;
  height: 44px;
  padding: 0;
  margin: 0;
  border: 1px solid #c8d4c6;
  border-radius: 8px;
  background: #fff;
  color: #214f42;
  font: 30px/1 Arial, sans-serif;
  cursor: pointer;
}
dialog .portal-dialog-close:hover { background: #edf2e8; }
dialog .portal-dialog-close:focus-visible { outline: 3px solid #214f42; outline-offset: 2px; }