diff --git a/playgrounds/sandbox/svelte.config.js b/playgrounds/sandbox/svelte.config.js
index 68ac605385..33e8c98908 100644
--- a/playgrounds/sandbox/svelte.config.js
+++ b/playgrounds/sandbox/svelte.config.js
@@ -1,5 +1,8 @@
 export default {
+	/** @type {import('svelte/compiler').CompileOptions} */
 	compilerOptions: {
+		css: 'injected',
+
 		hmr: false,
 
 		experimental: {