Viewport — Complete Guide
Viewport — 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 46 of 100
Viewport
Basics ✓ → Forms & semantics → APIs & performance → Projects
Forms & semantics · 2 — Forms, SEO, a11y · ~6 min · HTML — Accessibility & Responsive Design
What is this?
The viewport meta tag tells mobile browsers to use the device width instead of a desktop canvas.
Why should you care?
Without it, MarkupVerse pages look zoomed-out and tiny on phones.
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">
<!-- avoid user-scalable=no unless a rare map exception is justified -->Run Example »
Edit the code below and click Run to see the result in Toolliyo’s live editor.
What happened?
- width=device-width + initial-scale=1 is the default.
- Don’t disable zoom for accessibility.
Practice next
- Add viewport meta.
- Open on a phone or device mode.
- Pinch-zoom still works.
- Try viewport-fit=cover for notches carefully.
- Remove maximum-scale hacks.
Remember
device-width. scale 1. Allow zoom.
MarkupVerse viewport fix
Meta added to all templates.
Outcome: Mobile layout uses real width.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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