✅ HTML5 Basics You Should Know 🌐

HTML5 is the latest version of HTML (HyperText Markup Language). It structures web content using elements and adds semantic meaning, form control, media support, and improved accessibility.

🧱 Basic Structure of an HTML5 Page:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>My First Page</title>
</head>
<body>
  <h1>Welcome to HTML5!</h1>
  <p>This is a simple paragraph.</p>
</body>
</html>

📌 Key HTML5 Features with Examples:

1️⃣ Semantic Elements – Makes code readable SEO-friendly:

<header>My Website Header</header>
<nav>Links go here</nav>
<main>
  <article>News article content</article>
  <aside>Sidebar info</aside>
</main>
<footer>Contact info</footer>

2️⃣ Media Tags – Add audio and video easily:

<video width="300" controls>
  <source src="video.mp4" type="video/mp4">
</video>

<audio controls>
  <source src="audio.mp3" type="audio/mpeg">
</audio>

3️⃣ Form Enhancements – New input types:

<form>
  <input type="email" placeholder="Enter your email">
  <input type="date">
  <input type="range" min="1" max="10">
  <input type="submit">
</form>

4️⃣ Canvas SVG – Draw graphics in-browser:

<canvas id="myCanvas" width="200" height="100"></canvas>

💡 Why HTML5 Matters:
• Cleaner, more semantic structure
• Native support for multimedia
• Mobile-friendly and faster loading
• Enhanced form validation

🎯 Quick Practice Task:
Build a simple HTML5 page that includes:
• A header
• Navigation bar
• Main article
• Video or image
• Footer with contact info

✅ HTML5 Basics + Real Interview Questions Answers 🌐📋

1️⃣ Q: What is HTML and why is it important?
A: HTML (HyperText Markup Language) is the standard markup language used to create the structure of web pages. It organizes content into headings, paragraphs, links, lists, forms, etc.

2️⃣ Q: What’s the difference between <div> and <section>?
A: <div> is a generic container with no semantic meaning. <section> is a semantic tag that groups related content with meaning, useful for SEO and accessibility.

3️⃣ Q: What is the difference between id and class in HTML?
A:
• id is unique for one element
• class can be reused on multiple elements
→ id is used for specific targeting, class for grouping styles.

4️⃣ Q: What are semantic tags? Name a few.
A: Semantic tags clearly describe their purpose. Examples:
<header>, <nav>, <main>, <article>, <aside>, <footer>

5️⃣ Q: What is the difference between <ul>, <ol>, and <dl>?
A:
• <ul> = unordered list (bullets)
• <ol> = ordered list (numbers)
• <dl> = description list (term-definition pairs)

6️⃣ Q: How does a form work in HTML?
A: Forms collect user input using <input>, <textarea>, <select>, etc. Data is sent using the action and method attributes to a server for processing.

7️⃣ Q: What is the purpose of the alt attribute in an image tag?
A: It provides alternative text if the image doesn’t load and improves accessibility for screen readers.

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