themes-wordpress/alter/style.css

/*
Theme Name: Alter
Theme URI: https://github.com/wordpress/alter/
Author: the WordPress team
Author URI: https://wordpress.org/themes/alter
Description: Alter is a lean theme for bloggers that goes directly to the point, showing text-only posts right above the fold ornamented by a single image to compound the style.
Requires at least: 6.0
Tested up to: 6.2.2
Requires PHP: 5.7
Version: 1.0.1
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: alter
Tags: blog, one-column, wide-blocks, block-patterns, custom-colors, custom-header, custom-logo, custom-menu, editor-style, featured-image-header, featured-images, footer-widgets, full-site-editing, post-formats, rtl-language-support, template-editing, theme-options, threaded-comments, translation-ready, blog-posts, alternative-titles, post-titles, gentle, kind, tender, pink-purple, pinkish, alternated-query-loops, query-loops
*/

/*
 * Control the hover stylings of outline block style.
 * Unnecessary once block styles are configurable via theme.json
 * https://github.com/WordPress/gutenberg/issues/42794
 */
.wp-block-button.is-style-outline>.wp-block-button__link:not(.has-background):hover {
	background-color: var(--wp--preset--color--secondary);
	color: var(--wp--preset--color--base);
	border-color: var(--wp--preset--color--secondary);
}

/*
 * Link styles
 * https://github.com/WordPress/gutenberg/issues/42319
 */
a {
	text-decoration-thickness: .0625em !important;
	text-underline-offset: .15em;
}