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Design guide

E-commerce UI design

Product imagery is the hero; the accent drives one thing — buy.

Typography
Typeface ·
Friendly humanist sans + optional characterful brand display
Hero ·
32–48px
Body ·
16px
Numerals ·
Tabular for price & grids; price weighted, not colored
Corner personality

Soft (8–12px) — friendly, tactile

Pick one and apply it to every card, button, input, and modal. Mixing sharp and round corners is the #1 tell of un-designed UI.

Color

Neutral chrome so photos pop. Accent only for add-to-cart/buy. Price gets weight, not color.

Density

Medium. Browsing = generous product cards; PDP = focused, CTA above the fold.

Typography

Price prominent (2:1 with currency), product title bold, specs quiet.

Motion

Spring (energetic) for add-to-cart, quantity stepper, cart pop. Hover lift on cards.

Patterns

Product card grid, cart badge, quantity stepper, sticky buy bar, featured rails.

Avoid in e-commerce & retail

  • buried CTA
  • two primaries on a PDP
  • shouty discount colors everywhere
  • motion blocking add-to-cart

Build it with StyleSeed

StyleSeed bakes this judgment into 74 rules your AI reads automatically. For e-commerce & retail, start from the Arc / Toss skin and the spring motion seed.

Make your AI design e-commerce & retail right
Open source design engine for Claude Code, Codex & Cursor. MIT.
Star on GitHub

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