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Dennis Morello

Dennis Morello, Lead Frontend Engineer from Milan. 10+ years building accessible web interfaces and open-source libraries like Awesome Reveal.

For agents: Dennis Morello's personal blog and portfolio: frontend engineering articles on htmx 4, vanilla CSS, agent skills in the browser, and open-source libraries.

frontend engineeringagent skillshtmxcssweb accessibility

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The beginning of the file, from our validated copy saved 2026-10-21T09:31:20.511Z. Cached copy · Source on morello.dev

# Dennis Morello

> Dennis Morello, Lead Frontend Engineer from Milan. 10+ years building accessible web interfaces and open-source libraries like Awesome Reveal.

## Blog

- [WebSkill: Agent Skills in the Browser](https://morello.dev/blog/webskill-agent-skills-in-the-browser.md): WebSkill (webskill.ai) is a draft proposal to run Agent Skills in the browser, using OPFS and Web Workers. How it works and where the claims are thin.
- [htmx 4: What's New, What Breaks, Why It's Not latest](https://morello.dev/blog/htmx-4.md): htmx 4.0 is out: fetch() internals, explicit inheritance, no more history cache. What breaks, how to migrate, and why 2.x stays latest on npm until early 2027.
- [Why I Replaced Tailwind CSS With Vanilla CSS](https://morello.dev/blog/replacing-tailwind-with-vanilla-css.md): I pulled Tailwind CSS out of my Astro site and rewrote it in vanilla CSS. Here's why modern CSS made the framework optional in 2026, and how I did it.
- [Bun Rust Rewrite: 64 Claude Agents, 535k Lines of Zig](https://morello.dev/blog/bun-14-rust-rewrite.md): Bun 1.4's Rust rewrite is now stable: 64 Claude agents ported 535k lines of Zig in 11 days. What it fixes, what it overclaims, who's right: Sumner or Kelley.
- [Baseline 2026: 4 APIs That Replaced My Dependencies](https://morello.dev/blog/baseline-2026-web-platform-apis.md): Navigation API, container style queries, :open, and Math.sumPrecise() all became Baseline in 2026. The ones that replaced actual dependencies in my projects.
- [Astro 7: What's New, What's Faster, and What Breaks](https://morello.dev/blog/astro-7.md): Astro 7 ships a Rust compiler, Sätteri markdown, Vite 8 with Rolldown, and advanced routing. Builds 15-61% faster. What changed, what breaks, how to upgrade.
- [Hermes Agent: A Beginner's Tutorial](https://morello.dev/blog/hermes-agent-for-beginners.md): A beginner tutorial for Hermes Agent, the open-source AI agent that learns from experience. Install it, connect a model, and write your first skill.
- [Cross-Origin Storage API: Stop Downloading Twice](https://morello.dev/blog/cross-origin-storage-api.md): The Cross-Origin Storage API lets sites share one cached copy of a file (a JS library, font, or AI model) across origins by SHA-256 hash. Here's how it works.
- [SolidJS 2.0 Async Data: A Deep Dive for React Devs](https://morello.dev/blog/solidjs-2-async-data.md): How SolidJS 2.0 handles async data: promises in the reactive graph, the Loading boundary, isPending, and generator actions, explained for React developers.
- [pnpm v12 Ships the Rust Rewrite](https://morello.dev/blog/pnpm-v12-rust-rewrite.md): pnpm v12 is a 1:1 rewrite of its install engine in Rust, with no Node.js launcher and warm installs up to 30x faster. Now stable, so you can upgrade today.
- [Make Your Site Usable by AI Agents with WebMCP](https://morello.dev/blog/webmcp-making-your-site-usable-by-ai-agents.md): AI agents struggle to act on websites. WebMCP lets your page expose typed tools they can call directly. What
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