Introduction
A website is HTML (structure), CSS (style), and JavaScript (behavior) delivered by browsers from servers over HTTP.
Why This Topic Matters
Even backend developers read front-end code in PRs. BA and QA inspect UI bugs. Basic web literacy helps every IT role.
Real-Life Example
A bug report says “button misaligned on mobile.” You open DevTools, see HTML/CSS classes, and describe the issue precisely.
Syntax Breakdown
Flow: browser requests URL → server returns HTML → browser loads CSS/JS → page renders. Tools: Chrome DevTools, VS Code.
Step-by-Step Code Explanation
- Open any site, View Source vs Inspect Element.
- Note
vs. - Resize window — watch responsive layout change.
Expected Output
You can name the three core web technologies and open DevTools.
Common Beginner Mistakes
- Skipping hands-on practice with real tools
- Not asking how your specific team uses this workflow
- Memorizing terms without trying them on a sample project
Best Practices
- Practice in a personal test repo or sandbox project
- Write short notes after each lesson
- Ask a mentor or peer to review your work
- Add one resume bullet when you complete a practical task
Practice Problems
Easy — Problem 1
List three practical takeaways from "How Websites Work".
Medium — Problem 2
Describe how "How Websites Work" applies to your target IT role (developer, QA, or support).
Hard — Problem 3
Complete a small task related to "How Websites Work" and document steps you would show in an interview.
Mini Assignment
Apply one concrete idea from "How Websites Work" this week — notes, a mock task, or with a study partner. Then open the resume builder (/career/resume) and add one bullet under Experience or Projects describing what you did.
Lesson Summary
Web pages are documents styled and scripted in the browser.