CSS-only scrollspy effect using scroll-marker-group and :target-current

✨ This post is sponsored by everyone who has bought my Practical Accessibility course . ✨ The Bootstrap Scrollspy —now commonly known as just “Scrollspy”—is a feature that automatically updates navigation links based on the user’s scroll position to indicate which link is currently active in the viewport. It is popular because it aims to enhance the user experience by providing visual cues about…