header .wp-block-button__link {
  background: var(--wp--preset--color--primary);
  border-color: var(--wp--preset--color--primary);
  padding: 4px 30px;
}
header .wp-block-button__link::after {
  left: 0;
  transition: left 0.25s ease;
}
header .wp-block-button__link:hover {
  background: var(--wp--preset--color--primary);
  border-color: var(--wp--preset--color--primary);
}
header .wp-block-button__link:hover::after,
header .wp-block-button__link:focus-visible::after {
  left: 5px;
}