header.wp-block-template-part {
	position: fixed;
	width: 100%;
	background-color: white;
	top: var(--wp-admin--admin-bar--height, 0);
	z-index: 99;
	box-shadow: 0 2px 10px rgba(0, 0, 0, 0.0);
	transition: box-shadow 0.3s ease, background-color 0.3s ease, padding 0.3s ease;
	padding-block: 0.5rem;
}

header.wp-block-template-part.is-stuck {
	box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
	background-color: var(--wp--preset--color--base);
}