.wp-block-post-author.is-style-links-plain a,
.wp-block-post-author.is-style-links-underline-on-hover a {
	text-decoration-color: transparent;
	transition: all 0.3s ease-in-out;
}

.wp-block-post-author.is-style-links-underline-on-hover a:hover {
	text-decoration-color: currentColor;
	transition: all 0.3s ease-in-out;
}