---
id: kb-2026-00172
title: Responsive Web Design
schema_type: TechArticle
category: computer-science
language: en
confidence: medium
last_verified: '2026-05-28'
created_date: '2026-05-22'
generation_method: ai_structured
derived_from_human_seed: true
conflict_of_interest: none_declared
is_live_document: false
data_period: static
atomic_facts:
  - id: af-responsive-web-design-1
    statement: Responsive design adapts web layouts so pages work across different screen sizes and devices.
    source_title: Responsive design - Learn web development
    source_url: https://developer.mozilla.org/en-US/docs/Learn_web_development/Core/CSS_layout/Responsive_Design
    confidence: medium
  - id: af-responsive-web-design-2
    statement: CSS media queries apply styles conditionally based on device or viewport characteristics.
    source_title: Using media queries
    source_url: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_media_queries/Using_media_queries
    confidence: medium
  - id: af-responsive-web-design-3
    statement: The viewport meta element controls layout viewport behavior on mobile browsers.
    source_title: Viewport meta element
    source_url: https://developer.mozilla.org/en-US/docs/Web/HTML/Guides/Viewport_meta_element
    confidence: medium
completeness: 0.88
known_gaps:
  - Performance and accessibility testing across real devices
  - Handling complex app layouts beyond simple content pages
disputed_statements: []
primary_sources:
  - id: ps-responsive-web-design-1
    title: Responsive design - Learn web development
    type: technical_documentation
    year: 2024
    institution: MDN Web Docs
    url: https://developer.mozilla.org/en-US/docs/Learn_web_development/Core/CSS_layout/Responsive_Design
  - id: ps-responsive-web-design-2
    title: Using media queries
    type: technical_documentation
    year: 2024
    institution: MDN Web Docs
    url: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_media_queries/Using_media_queries
  - id: ps-responsive-web-design-3
    title: Viewport meta element
    type: technical_documentation
    year: 2024
    institution: MDN Web Docs
    url: https://developer.mozilla.org/en-US/docs/Web/HTML/Guides/Viewport_meta_element
secondary_sources: []
updated: '2026-05-28'
---
## TL;DR
Responsive web design makes pages adapt to different screens and input contexts. The core evidence is about fluid layouts, media queries, and the mobile viewport.

## Core Explanation
Responsive design is not a single framework. It combines CSS layout techniques, conditional styling, and viewport configuration so content remains usable across phones, tablets, laptops, and large displays.

## Detailed Analysis
This repair uses MDN documentation and avoids claims about a specific framework being required for responsiveness. Real quality still depends on testing actual content, touch targets, performance, and accessibility.

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