# What is Mobile-First Design? | Yungle glossary

> Mobile-first design means designing for the smallest screen first, then scaling up.

Source: https://yungle.ai/glossary/mobile-first-design/

1.  [Resources](https://yungle.ai/resources)
2.  Glossary

Glossary · M

# Mobile-First Design

In plain words

Mobile-first design is an approach where a site is designed and built for the smallest, mobile screen first, then progressively enhanced for larger tablet and desktop viewports. Since Google primarily indexes and ranks the mobile version of a site, mobile-first design is now a baseline requirement rather than an option.

Example

The pricing table is designed first as stacked cards for a phone, then expanded into a side-by-side comparison on desktop.

Related resources

-   FAQ

    ## Is My Website Mobile-Friendly Enough?

    If your site takes more than 3 seconds to load on mobile, requires pinching to zoom, or has buttons too small to tap accurately, it's not mobile-friendly enough — and it's likely losing you both rankings and conversions. Over half of web traffic is mobile, and Google indexes your mobile version first. Test your actual site on a phone, not just a desktop preview. Small friction adds up fast on mobile.

    [See answer](https://yungle.ai/resources?type=faq#is-my-website-mobile-friendly-enough)
-   Glossary

    ## Client-First

    Client-First is Webflow's official naming and class convention for building scalable, reusable sites.

    [See term](https://yungle.ai/glossary/client-first)
-   FAQ

    ## How Do I Optimize My Website for Search Engines?

    Start with clean technical SEO — fast load times, proper heading structure, mobile responsiveness — then build content around what your actual customers are searching for. Most sites over-invest in keywords and under-invest in structure. Google needs to crawl and understand your site before content quality even matters. Fix the technical foundation first, then focus content on answering real customer questions clearly.

    [See answer](https://yungle.ai/resources?type=faq#how-do-i-optimize-my-website-for-search-engines)
-   Glossary

    ## Responsive Design

    Responsive design ensures a website works well across devices and screen sizes using flexible layouts.

    [See term](https://yungle.ai/glossary/responsive-design)
-   Insight

    ## How to Turn a Brand System Into a Website

    How to translate a brand identity into a website without losing it: design tokens, components, typography, motion and a CMS your marketing team can run.

    [Read insight](https://yungle.ai/insights/how-to-turn-a-brand-system-into-a-website)

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