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390
Shorthand for a phone-width layout check around 390 pixels wide.
Why this word exists
Phones are where layouts confess. 390 is shop shorthand for a phone-width check around 390 pixels — a common comfortable width, not a sacred law.
Notes say check 390 instead of a long device lecture. It is layout QAKeep QA is the human checklist a Botski pack or keep branch waits on before someone wires it into the live site. talk.
Where you will meet it
Keep glances, Artsy notes, and Rich eye-checks mention 390 when rails, chipA small pill or tag that labels a category, score, or filter — often in a chip bar at the top of a card.-bars, or strips wrap badly.
Examples
- ChipA small pill or tag that labels a category, score, or filter — often in a chip bar at the top of a card.-bar wraps at 390; Artsy shortens labels.
- StickyA rail or header that stays on screen while you scroll. railA vertical side column on a page (left rail, sticky rail) that holds nav or tools beside the main content. steals too much width at 390 — soft-modA careful site change that softens or gates a feature without a big redesign — often behind honesty rules. trims it.
- HeroThe big top artwork or banner on a page, above the main copy. safe-area still fits titles when the viewport is 390.
Fetched 2026-09-23 CT.