Designed at 360px
The narrow layout is the primary design, not a consequence.
Mobile First Web Design
Mobile First Web Design That Starts at Phone Width
When a site is designed wide and then made to fit a phone, the phone layout is whatever survived the squeeze. Mobile first web design reverses that: the layout most visitors actually see is designed first and deliberately, and the wider version is the adaptation.
We Design the Layout Most People See
Responsive is not the same as mobile first. One means it fits; the other means it was decided.
Priority Forced
A phone screen holds one idea, which forces a real decision about what matters.
Touch Targets Sized
Tappable with a thumb, spaced so the wrong thing is not hit.
Tested on Devices
Not only in a resized browser window.
Light Payload
Because these visits happen on mobile connections.
Mobile First, Explained
What Changes When You Start Narrow?
Four consequences, and the first one is the point.
Discuss Your Site →- 1
Priority Becomes Explicit
Only one thing fits above the fold, so somebody has to choose it.
- 2
Navigation Gets Real
A menu that must work in a small space cannot hide complexity behind width.
- 3
Content Gets Shorter
Not less substantial — less padded, which improves the wide version too.
- 4
Performance Matters
Weight is felt immediately on a mobile connection.
What Mobile First Design Covers
The narrow layout as the primary design, then upward.
Search implications are covered by mobile SEO.
How We Design Mobile First
Narrow first, always. Wider layouts adapt upward.
Decide Priority
What one thing the first screen is for.
Design at 360px
The primary layout, in full.
Expand Upward
Wider layouts as adaptations rather than the source.
Test on Devices
Real phones, real connections.
Measure Weight
Against a budget suited to mobile data.
Method
Why Designing Wide First Produces a Worse Phone Layout
The narrow version becomes a compromise rather than a design.
What actually happens in the squeeze?
A three-column section becomes three stacked blocks in whatever order the markup happened to be. A wide hero with text beside an image becomes text above an image, or the reverse, depending on the code rather than on a decision.
Nobody chose that order. It is the output of a layout designed for a different shape, and on a phone it is the entire experience.
Starting narrow makes that order an explicit decision, and the wide layout is then the one being adapted — which is easier, because width forgives.
Why does narrow force better priorities?
Because roughly one idea fits on the first screen. On a wide layout, a headline, a subheading, an image, three benefits and two buttons all fit, so nothing has to be ranked.
On a phone, something has to be first and something has to be third, and making that call improves the page at every width.
It is the most useful discipline in the method: not the technique, but being forced to decide what the page is actually for.
Questions,answered.
Mobile first web design designs the narrow layout first and adapts upward, so the layout most visitors see is a deliberate decision rather than the residue of a desktop design.
No. Responsive means the layout fits at any width. Mobile first means the narrow layout was designed rather than derived, which is a different and usually better outcome.
It still usually helps, because narrow-first forces explicit priority decisions that improve the wide layout too. And search indexing follows the mobile version regardless — see mobile SEO.
On real devices as well as in a resized browser. Touch accuracy, thumb reach and behaviour on a mobile connection do not show up in a narrow desktop window.
Shortened rather than cut, usually. Narrow layouts expose padding that added length without adding substance, and removing it tends to improve the wide version as well.
Still deciding if mobile first web design is right for you?
Talk to UsNobody Decided That Order
On a phone, a three-column section becomes three stacked blocks, and one of them is first. That position is the most valuable on the page.
It was not assigned. It is whichever column happened to be written first in the markup, which was itself decided by how the desktop layout read from left to right.
The most prominent element of the experience most visitors have is therefore an accident of source order — and it stays that way until somebody designs the narrow layout on purpose.
Free Mobile Review
See Your Site at Phone Width
Send us your site. We will look at it at 360px and tell you what the first screen actually shows and how the layout stacks.
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