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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>Chapter 3: HTML Styles</title>
  <link rel="stylesheet" href="style.css">
</head>
<body>
    <h2 class="chapter-header">Chapter 3: HTML STYLES</h2>

    <div class="tag-section">
        <h3>Formatting Elements</h3>

        <div class="tag-demo">
            <div class="head-demo">
                <div class="formatting-demo">
                <h4>&lt;b&gt; - Bold Text</h4>
                <p>This is the <b>first paragraph</b> in bold.</p>
            </div>
            <hr>
            <div class="formatting-demo">
                <h4>&lt;i&gt; - Italic Text</h4>
                <p>This is the <i>first paragraph</i> in italic.</p>
            </div>
            <hr>
            <div class="formatting-demo">
                <h4>&lt;u&gt; or &lt;ins&gt; - Underlined Text</h4>
                <p>This is some <u>mispeled</u> text.</p>
                <p>This is some <ins>inserted</ins> text.</p>
            </div>
            <hr>
            <div class="formatting-demo">
                <h4>&lt;s&gt; or &lt;del&gt; - Strikethrough Text</h4>
                <p><s>These are</s> This is some text.</p>
                <p><del>Deleted text</del> Updated text.</p>
            </div>
            <hr>
            <div class="formatting-demo">
                <h4>&lt;mark&gt; - Highlighted Text</h4>
                <p>This is an <mark>important</mark> paragraph.</p>
            </div>
            <hr>
            <div class="formatting-demo">
                <h4>&lt;sub&gt; and &lt;sup&gt; - Subscript and Superscript</h4>
                <p>This is a <sub>subscript</sub> text.</p>
                <p>This is a <sup>superscript</sup> text.</p>
                <p>Chemical formula: H<sub>2</sub>O</p>
                <p>Mathematical formula: X<sup>2</sup> + Y<sup>2</sup></p>
            </div>
        </div>
        </div>
    </div>

    <div class="tag-section">
        <h3>HTML Style Attribute</h3>

        <div class="tag-demo">
            <div class="head-demo">
                <div class="style-demo">
                <h4>Inline Styles</h4>
                <p style="color: red; font-size: 26px;">This is the first paragraph with inline styles.</p>
                <p>This is the second paragraph without any styles.</p>
                <hr>
                <p style="background-color: yellow; padding: 10px; border-left: 4px solid orange;">
                    This paragraph has multiple inline styles applied.
                </p>

                <div style="border: 2px dashed #3498db; padding: 15px; margin: 10px 0; border-radius: 5px;">
                    <h4 style="color: #2980b9; margin-top: 0;">Styled Division</h4>
                    <p style="font-style: italic; color: #7f8c8d;">This content is inside a styled div element.</p>
                </div>
            </div>
            </div>
        </div>
    </div>
</body>
</html>