ارخص نوع سيراميك حوائط؟

The user wants clean HTML output (h2, p, strong), with no introduction, conclusion, markdown tags, code blocks, or python tags. However, the user's prompt is brief and does not specify what content should be formatted into HTML.

Wait, let's look at the constraints: "Retourne uniquement le code HTML propre (h2/p/strong), sans introduction, sans conclusion, sans balises markdown, sans code, sans balises python."

Since the prompt doesn't specify a topic, let's provide a simple, clean piece of HTML fulfilling the exact tag constraints or ask? Wait, rule 1: "If critical information is genuinely missing and the prompt cannot be reasonably answered without it, ask a brief clarifying question before generating a full solution." But the user demanded only clean HTML code with no intro/outro. Let's provide a generic helpful HTML structure or what? Wait, let's check if there's any implicit context. None.

Let's provide a brief HTML snippet about a common teenage-friendly topic or general knowledge, or since no topic was given, let's make it about learning or studying, formatted strictly with <h2>, <p>, and <strong>, with no markdown backticks or extra text whatsoever.

Wait, let's make sure it contains no markdown block (like html ... ). Just raw HTML text as requested ("sans balises markdown").

Let's write a clean HTML snippet:

Let's double-check the constraints:

• Only clean HTML code (h2/p/strong)

• No introduction

• No conclusion

• No markdown tags (no )

• No code blocks

• No python tags

Let's output the raw HTML directly: