---
title: "Using CSS vars to style SVG symbols"
url: https://daily.dev/posts/using-css-vars-to-style-svg-symbols-yqxm01fdx
source_url: https://deterministic.space/css-in-svg-symbols.html
type: article
source: "Pascal’s scribbles"
published: 2026-04-14T18:17:54.590Z
updated: 2026-04-14T18:18:12.880Z
tags: ["css", "html", "svg", "web-components"]
reading_time: 3
upvotes: 5
comments: 0
language: en
---

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# Using CSS vars to style SVG symbols

**[Pascal’s scribbles](https://daily.dev/sources/deterministicspace)** · 3 min read · 5 upvotes · 0 comments

## Summary

When using SVG symbol sprites with `<use href="#id">`, CSS selectors can't style inner elements because the `<use>` element creates a shadow root. CSS custom properties (variables) are the one thing that crosses this shadow boundary. By defining a `<style>` block inside the SVG sprite that maps CSS variables to fill properties (e.g., `.bg { fill: var(--bg-fill, currentColor); }`), you can control the appearance of individual symbol layers by setting inline style variables on the wrapper element. The `currentColor` fallback ensures symbols render sensibly without explicit variables.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://deterministic.space/css-in-svg-symbols.html>

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---

Tags: [#css](https://daily.dev/tags/css), [#html](https://daily.dev/tags/html), [#svg](https://daily.dev/tags/svg), [#web-components](https://daily.dev/tags/web-components)

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