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How to Build a Smooth Accordion with Animation Using Tailwind CSS (Works with React, Next.js & Pure HTML)

The "Why Is This Thing Jumping Around?" Problem 😅 You've seen it happen. You build a simple show/hide toggle, open it in the browser, and the content just snaps into existence like it teleported. No grace. No style. Just — bam. There it is. That's the accordion without animation.