Hyper Text Markup Language (HTML) is the standard language used to structure content on the web. It defines the meaning and structure of web content using elements (tags) and attributes.
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<h1> to <h6> define document outline.<h1>JavaScript Documentation</h1>
<h2>Variables</h2>
<h3>Declaring Variables</h3>
<h4>Using var</h4>
<h5>Variable Hoisting</h5>
<h6>Temporal Dead Zone</h6>
<p>, <strong>, <em>, <span>, <blockquote>.<p id="main-description">This is the main description paragraph with a unique identifier.</p>
<p id="welcome-text">Welcome to our application!</p>
<ul>, <ol>, <li>, and description lists <dl>, <dt>, <dd>.<ol type="1">
<li>Numbered item (default)</li>
<li>Second item</li>
</ol>
<ol type="A">
<li>Uppercase letters</li>
<li>Second item</li>
</ol>
<ul>
<li>Red</li>
<li>Green</li>
<li>Blue</li>
</ul>
<img src="", height="", width="", alt="">.<img src="profile-pic.jpg"
alt="John Doe - Web Developer"
width="200"
height="200"
class="profile-image"
title="John Doe">
<a href="", target="">, <nav>.<a href="<https://example.com>" target="_blank">Open in New Tab</a>
<table>, <thead>, <tbody>, <tfoot>, <tr>, <th>, <td> for data tables, not layout.<table border="1">
<caption>Class Schedule</caption>
<thead>
<tr>
<th>Time</th>
<th>Monday</th>
<th>Tuesday</th>
<th>Wednesday</th>
</tr>
</thead>
<tbody>
<tr>
<td>9:00-10:00</td>
<td rowspan="2">Mathematics</td>
<td>Physics</td>
<td>Chemistry</td>
</tr>
<tr>
<td>10:00-11:00</td>
<td colspan="2">Lab Session</td>
</tr>
<tr>
<td>11:00-12:00</td>
<td>English</td>
<td>History</td>
<td>Geography</td>
</tr>
</tbody>
</table>