Simon Willison’s Weblog

Rounded Corners with CSS and JavaScript. In which I attempt to show that you CAN have your cake and eat it too.

Posted 28th May 2004 at 5:11 pm

Recent articles

Reverse engineering Codex CLI to get GPT-5-Codex-Mini to draw me a pelican - 9th November 2025
Video + notes on upgrading a Datasette plugin for the latest 1.0 alpha, with help from uv and OpenAI Codex CLI - 6th November 2025
Code research projects with async coding agents like Claude Code and Codex - 6th November 2025

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