How websites work — HTML and CSS for kids

Code tip

Ask, send, show — “the browser asks, the server sends, the browser shows”

1. URL = protocol :// domain name / path, e.g. https://www.example.com/about.html.
2. Browser asks → DNS finds the server → server sends the files → browser shows the page.
3. https (with the lock) scrambles the data; http does not.

Use it for: Understanding web addresses, checking links before you click and computer lessons on the internet.

Worked example: 🌍 What is the domain name in this URL?
https://www.example.com/about.html → www.example.com

✏️ Practice

Work it out in your head or on paper, then tap your answer — or type it and press Check. Stuck? Press “Show me how”.

🏁 Lesson 27 test

20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.

🏅 Sign in with Google to earn the 🔒 Address Bar Ace badge when you pass — and a certificate when you finish all 10 lessons of Part 3 · Web Development. You can still take the test without signing in.

🖨️ Web Worksheet: How Websites Work

• Worksheet set 1 (PDF)
• Worksheet set 2 (PDF)
• Worksheet set 3 (PDF)