<!DOCTYPE html>
<html>
<body>
    <h1>H1 - Asosiy sarlavha</h1>
    <h2>H2 - Ikkinchi daraja</h2>
    <h3>H3 - Uchinchi daraja</h3>

    <p>Bu oddiy paragraf matni.</p>
    <p>Bu <strong>qalin</strong>, bu <em>kursiv</em>, bu <mark>ajratilgan</mark> matn.</p>
    <p>Bu <del>o'chirilgan</del> va bu <ins>qo'shilgan</ins> matn.</p>
    <p>H<sub>2</sub>O — suv formulasi. x<sup>2</sup> — kvadrat.</p>

    <blockquote style="border-left:4px solid #2E86AB;padding-left:15px;color:#555">
        "Bilim — eng katta boylik." — Xalq maqoli
    </blockquote>
</body>
</html>