Chapter Navigation

An opt-in nav region. Lys positions it and tracks the active link; you write the links and the styling.

The Problem

A long deck is hard to skim. Readers want a persistent map of the sections and a sense of where they are.

The Approach

• Add data-lys-nav to a nav region inside the deck.
• Point each <a href="#id"> at a slide's id.
• Lys marks the current slide's link with data-lys-nav-active.

The Result

The links scroll to their slides (even with no JavaScript), and the highlight follows you as you scroll or navigate by keyboard.

That's It

No generated DOM, no baked-in styling — just a container and a hook.