Anthropic tip: concrete design constraints beat vague prompts for AI-built websites

minchoi · x · 2026-10-28

Tip #11 of a translated Anthropic prompt-engineering series: prompting Claude to "make a beautiful website" or "avoid the AI look" fails. Instead give concrete constraints — no cream backgrounds, no italic headline accents, no numbered section labels, no pill-shaped buttons. An example prompt with explicit white background, straight headlines, and rectangular buttons yields clean, on-brand results.

Related event: Anthropic publishes official prompting best practices for Claude Opus 5.5(13 posts)→

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