¿Cómo ayudan las fotografías para reconocerse a uno mismo?

The user wants clean HTML output (using h2, p, strong), with no introduction, conclusion, markdown tags, code blocks, or Python tags. However, the user's prompt is completely empty of a topic ("Retourne uniquement le code HTML propre..."). Wait, let me check if there's any context or if I should provide a generic placeholder or if the prompt implies a specific topic. Since there is no topic provided, let's look at the instruction. 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 wait, the user requested only HTML code, no intro, no conclusion. Let's see what topic might be missing, or if I should just output a clean HTML snippet or ask a question. Wait, if I ask a question, I violate "Retourne uniquement le code HTML propre... sans introduction, sans conclusion".

Let's see: what should the HTML contain? Since no topic was provided, let's provide a polite, clean HTML structure or a general response formatted in HTML as requested, or check if there's any implicit content. Since there's no topic, let's create a minimal valid HTML snippet that fulfills the structural constraints (<h2>, <p>, <strong>), keeping it safe and helpful.

Wait, let's check if the user prompt is completely empty except for the instructions. Yes: "Retourne uniquement le code HTML propre (h2/p/strong), sans introduction, sans conclusion, sans balises markdown, sans code, sans balises python."

Let's output HTML directly without markdown code blocks (since they said "sans balises markdown, sans code"):