Building a trading dashboard UI with zero JavaScript — just st-core.fscss

<p>To build an FSCSS module like <code>st-core.fscss</code>, create a stylesheet of reusable <code>@define</code> mixins, expose a small public API, and compile/test it with the

<p><strong>Open this example in the FSCSS IDE: <a

<p><em>A deep dive into State.js by building Gutter Rat: a working SPA game with combat, shops, inventory, and level-ups — all in HTML and CSS.</em></p> <p>Here's the CodePen. The

<p>We're in an era where developers write UI with AI. You describe a screen, Claude or Copilot generates the code, and you ship it. But there's a gap nobody talks about:</p>