Top storyTools·30 Jun
What’s !important #14: Gap Decorations, random(), field sizing, and More
Developers explore CSS Gap Decorations, random(), and field sizing in recent experiments and tutorials.
CSS-Tricks
3 min readIn this edition
Stories from Tuesday, 30 June 2026
Lenny's Newsletter
ProductSonnet 5 review: I ran 64 generations to find out if it's worth it
Sonnet 5 was tested against four other frontier models across various tasks and metrics.
30 Jun3 min read
AI & Tools
Hugging Face
AIWhy Specialization Is Inevitable
Specialization is inevitable across optimization theory, evolutionary biology, competitive markets, and machine learning because algorithms win by fitting their target problem, not by being general.
30 Jun10 min read
Inspiration
One Page Love
InspoWebsite Inspiration: Cibby
Cibby's launching soon page features interactive moving covers and a teaser video showcasing its app for organizing physical game collections.
30 Jun
UX & Thinking
UX Planet
ThinkingClaude Design’s Most Overlooked Feature
Claude Design offers a useful tool for quick prototyping, though one of its features is often overlooked by users.
30 Jun
UX & Thinking
UX Collective
ThinkingWhen the profession outruns the mentor
When a profession evolves rapidly, mentors may struggle to provide relevant guidance, as their own experiences can quickly become outdated and less applicable to current practices.
28 Jun
UX & Thinking
UX Collective
ThinkingWhat are hypertokens? The layer between tokens and components, rebuilt for agents
Hypertokens, a new layer between tokens and components, are being developed to facilitate design system integration and functionality for AI agents.
28 Jun
Editor's pick
How top PMs increase their leverage with AI
Top product managers increase their leverage with AI by prototyping with code and querying data conversationally.
Lenny's Newsletter
Look & feel
Inspiration picks
Visual references from across the design web.
