Responsive Design — Complete Guide
Responsive Design — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of HTML Tutorial on Toolliyo Academy.
On this page
HTML Tutorial · Lesson 45 of 100
Responsive Design
Basics ✓ → Forms & semantics → APIs & performance → Projects
Forms & semantics · 2 — Forms, SEO, a11y · ~6 min · HTML — Accessibility & Responsive Design
What is this?
Responsive design adapts layout to screen size — HTML structure should stay meaningful at all widths.
Why should you care?
MarkupVerse mobile traffic dominates; pages must not require horizontal scrolling for core content.
See it live — copy this example
Save as demo.html and open in your browser, or use Run Example below.
<meta name="viewport" content="width=device-width, initial-scale=1">
<main>
<h1>Dashboard</h1>
<section class="cards"><!-- stack on small, row on large via CSS --></section>
</main>Run Example »
Edit the code below and click Run to see the result in Toolliyo’s live editor.
What happened?
- Viewport meta is required.
- Prefer fluid images.
- Structure content in an order that works when stacked.
Practice next
- Confirm viewport meta.
- Reorder HTML for mobile-first reading.
- Widen/narrow the window.
- Add a hamburger button landmark later.
- Test at 320px width.
Remember
Viewport meta. Stack-friendly order. CSS handles breakpoints.
MarkupVerse mobile stack
Dashboard cards stack on phones.
Outcome: Readable without pinching.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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