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CSS Variables implementation guide Dynamically in Tailwind CSS with Alpine.js Interactivity

👀 Views: 60 💬 Answers: 1 📅 Created: 2025-06-13
css tailwind-css alpine.js HTML

I'm working through a tutorial and I've hit a wall trying to I'm attempting to set up I've looked through the documentation and I'm still confused about I've looked through the documentation and I'm still confused about I'm experiencing issues with CSS variables not updating as expected when using Tailwind CSS in conjunction with Alpine.js for interactivity. I have a simple component where I want to change the background color based on a button click. I'm defining a CSS variable in my styles and trying to update it dynamically, but it doesn't seem to reflect any changes in the UI. Here's a simplified version of my code: ```html <div x-data="{ color: '--bg-color: #ffffff' }" class="h-screen" style="background-color: var(--bg-color);"> <button @click="color = '--bg-color: #ff0000'" class="px-4 py-2 bg-blue-500 text-white rounded">Change Color</button> <p class="mt-4">Current Background Color: <span x-text="color"></span></p> </div> ``` I expected that clicking the button would change the background color of the div to red, but it remains white, and I get no console errors. I’ve tried using `document.documentElement.style.setProperty('--bg-color', '#ff0000')` inside my click event, but that didn’t help either. Any ideas on how to make the CSS variable update dynamically with Alpine.js? Also, are there any best practices I should follow when integrating CSS variables with frameworks like this? I'd really appreciate any guidance on this. The stack includes Html and several other technologies. Has anyone dealt with something similar? I'm working in a Windows 11 environment. Any advice would be much appreciated. Could someone point me to the right documentation?