add html/css demos for 223015c chapter 1: html basics, widgets, a11y

This commit is contained in:
2026-04-20 10:44:12 +02:00
parent 558d0e5ecd
commit a2934f1327
33 changed files with 566 additions and 3 deletions

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<!DOCTYPE html>
<html lang="de">
<head>
<meta charset="UTF-8">
<title>Details/Summary (offen)</title>
</head>
<body>
<details open>
<summary>Klick mich!</summary>
<p>Dieser Text war versteckt.</p>
</details>
</body>
</html>