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Responsive design
Responsive design helps a website adapt to different screen sizes so it works well on mobile, tablet and desktop.
What is responsive design?
Responsive design means a website’s layout, text, images and navigation adapt to the size of the screen or browser window. The same website can therefore work across phones, tablets, laptops and desktop computers without needing a separate version for each device.
A responsive website should look good, remain easy to use and keep its content readable regardless of screen size.
Why it matters
Better mobile experience
A responsive layout makes the site easier to use on smaller screens, where space is limited and people often navigate by touch.
Easier to use
Text, navigation, forms and other controls can adapt so visitors do not need to zoom or scroll sideways.
Better for search visibility
Google recommends responsive web design for mobile-friendly websites, and Google Search uses the mobile version of a site’s content for indexing and ranking.
Easier to maintain
A single responsive website is usually simpler to manage than maintaining separate desktop and mobile versions.
What responsive design involves
Flexible layouts
Layouts adapt, stack or rearrange as the available screen space changes.
Readable text
Text should remain clear and comfortably readable without requiring visitors to zoom.
Images that scale properly
Images resize to fit their containers without overflowing, distorting or unnecessarily slowing the page.
Mobile-friendly navigation
Navigation should adapt to smaller screens while keeping important pages easy to reach.
Touch-friendly controls and spacing
Buttons, links and form controls should be large enough and spaced well enough to use comfortably on a touchscreen.
Designing for different screens
A responsive website uses flexible layouts, fluid media and CSS techniques such as media queries to adjust the page when the available space changes. You do not need to design for every individual phone or laptop. The aim is to let the content respond naturally and introduce breakpoints where the layout needs to change.
Mobile
Content stacks vertically for a clear, simple layout.
Tablet
Layout adjusts to make the best use of space.
Desktop
More space for a wider layout and additional content.
What to check
- Does the navigation work on mobile?
- Is text easy to read without zooming?
- Are the buttons easy to tap?
- Do images resize properly?
- Does the layout break on small screens?
- Have you tested on more than one device?
Common mistakes to avoid
Text too small
Small text can be hard to read on mobile devices, leading to a poor user experience.
Buttons too close together
Buttons and links that are too close can be difficult to tap, especially on smaller screens.
Oversized images
Large images can slow down your site and may not display well on smaller screens.
Relying only on desktop testing
A site might look good on desktop but still have issues on mobile or tablet devices.
Further reading
Learn more about responsive design from these trusted resources.
MDN Web Docs: Responsive web design
Covers responsive layouts, media queries, flexible images and viewport behaviour.
Google Search Central: Mobile-first indexing best practices
Useful for understanding how Google treats mobile content and why responsive design is recommended.
W3C Web Accessibility Initiative: Mobile accessibility
Explains how accessibility principles apply across phones, tablets and other devices.
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