Study the GitHub v5.3. changelog for a complete list of alterations in this release. We’ve rebuilt some components (like list groups and alerts) to use these new variables in their supply Sass and compiled CSS so that they respond to the colour mode changes. The other supported value is media-query, https://sethff.blogozz.com/23620316/the-untold-story-on-blog-that-you-need-to-read-or-be-left-out