CSS Variables Not Updating Dynamically with React State Changes
I can't seem to get I've searched everywhere and can't find a clear answer... I've been banging my head against this for hours. I'm trying to use CSS variables to control the background color of a component based on user interaction in my React app. However, when I update the state and try to change the CSS variable, the changes are not reflected in the styles immediately. Here's a simplified version of my component code: ```jsx import React, { useState } from 'react'; const ColorChanger = () => { const [color, setColor] = useState('blue'); const changeColor = (newColor) => { setColor(newColor); document.documentElement.style.setProperty('--main-bg-color', newColor); }; return ( <div style={{ backgroundColor: 'var(--main-bg-color)', height: '100vh' }}> <button onClick={() => changeColor('red')}>Red</button> <button onClick={() => changeColor('green')}>Green</button> <button onClick={() => changeColor('blue')}>Blue</button> </div> ); }; export default ColorChanger; ``` In my `index.css`, I have defined the CSS variable like this: ```css :root { --main-bg-color: blue; } ``` When I click the buttons, I expect the background color to change immediately. Instead, it remains blue until I refresh the page. I've double-checked that the CSS variable is defined correctly and that the `changeColor` function is being called. I also tried logging the value of `color` after setting it, and it shows the expected value. Is there something I'm missing regarding the timing of updates in React or how CSS variables are handled dynamically? Could it be related to how I'm applying the background color style? I'm using React version 17.0.2. Any suggestions would be greatly appreciated! For context: I'm using Javascript on Ubuntu. Any ideas what could be causing this? I'm working with Javascript in a Docker container on macOS. Is there a better approach?