As someone who maintains multiple JS libs and provides support on Discord, the #1 reason I default to using TW is because it lets me drop code snippets in chat without lugging around an extra CSS file or walls of inline styles, keeping everything compact and easy to read (tons of vertical space saved).
Without TW, that snippet may need to take 3x more lines.
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My major issue with TW at the moment is that I use TW in a non-browser environment (Unity), so TW3 is fine since I can tweak everything with JavaScript. TW4 shifts everything to CSS, gives zero workarounds, and my setup crumbles.
Example: https://onejs.com/docs/web/tailwind#quick-example
Without TW, that snippet may need to take 3x more lines.
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My major issue with TW at the moment is that I use TW in a non-browser environment (Unity), so TW3 is fine since I can tweak everything with JavaScript. TW4 shifts everything to CSS, gives zero workarounds, and my setup crumbles.