esp-header {
  --esp-header-background: transparent;
  --esp-header-border: none;
  --esp-header-shadow: none;
}

esp-header-button {
  --esp-header-button-background: transparent;
  --esp-header-button-background-hover: transparent;
  --esp-header-button-box-shadow: none;
  --esp-color-border: transparent;
}