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How can I correctly style nested HTML elements with CSS variables in a dynamic Vue 3 component?

šŸ‘€ Views: 16 šŸ’¬ Answers: 1 šŸ“… Created: 2025-06-08
vue.js css html

I'm stuck on something that should probably be simple. I'm working with an scenario with styling nested HTML elements in my Vue 3 component using CSS variables. I have a dynamic component where I set a color variable based on user input. However, the nested elements aren't reflecting the updated styles as expected. Here's a simplified version of my code: ```html <template> <div :style="{ '--main-color': userColor }" class="container"> <h1 class="title">Dynamic Title</h1> <p class="description">This is a description.</p> </div> </template> <script> export default { data() { return { userColor: '#3498db' // Default color }; }, methods: { changeColor(newColor) { this.userColor = newColor; } } }; </script> <style scoped> .container { background-color: var(--main-color); padding: 20px; } .title { color: var(--main-color); } </style> ``` When I first load the component, the background of the container displays the correct color, but when I call the `changeColor` method to update `userColor`, the changes are not reflected in the nested `.title` class. I checked the console and see no errors related to this. I tried to log the `userColor` in the method to confirm it changes and it does, but it seems like the CSS variable doesn't update accordingly. I also made sure that `scoped` styles are applied correctly, but it still doesn't work. Is there something I’m missing regarding the reactivity of CSS variables in Vue 3 or how I’m applying the styles? Any help would be appreciated! This is happening in both development and production on Windows 11. Thanks for any help you can provide! This is for a mobile app running on Linux.