- Shorten verbose lesson titles for better sidebar display - Minor content improvements across lessons
Make explicit that <progress> requires a closing tag and can contain fallback text, unlike self-closing tags like <input>.
- Wrap HTML element names in <kbd> tags in all validation messages - Apply consistent formatting to both English and German lessons - Make hints clearer about which elements/attributes to use - Fix mobile editor layout overflow issue
- Remove placeholder comments from initialCode fields - Fix typo: "wichtig Wort" -> "wichtigen Wort" in de/20-html-elements.json - Improve German validation messages for readability - Use consistent terminology (Eingabefeld instead of Input)
New lesson modules covering native HTML5 features: - Details & Summary: disclosure widgets - Progress & Meter: progress bars and gauges - Datalist: autocomplete inputs - Data Attributes: custom data-* attributes - Dialog: native modal dialogs - Forms with Fieldset: grouped form controls - Figure & Figcaption: self-contained content - Tables: structured data with caption, thead, tbody, tfoot - Marquee: classic scrolling text (deprecated but fun) - SVG Basics: drawing circles, rectangles, and lines Each module includes 2-3 progressive lessons with fancy styling (pastel gradients, 100vh layouts, etc).
