Official Anthropic skill. Guides Claude to create distinctive, production-grade UIs — not the default Inter + purple gradient.
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name: Frontend Design
description: Produce distinctive, production-grade interfaces with intentional typography, color, and layout — never the generic default look.
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# Frontend Design
Default to design that has a point of view. Generic is a failure mode, not a
safe choice.
## Start with a direction, not a component
Before writing markup, decide the personality in one line: "editorial and
restrained", "dense and technical", "warm and tactile". Every later choice
serves that direction.
## Typography
- Pick a display face with character for headings; pair it with a clean
workhorse for body. Avoid shipping Inter-on-everything by reflex.
- Establish a real type scale (e.g. 1.250 or 1.333 ratio). Do not eyeball sizes.
- Set body line-height around 1.5–1.65 and constrain measure to 60–75 chars.
- Use one or two weights deliberately; weight is hierarchy.
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