diff --git a/packages/vite/src/modes/global/build.ts b/packages/vite/src/modes/global/build.ts
index 2fa2e7b59c..fec5907bc8 100644
--- a/packages/vite/src/modes/global/build.ts
+++ b/packages/vite/src/modes/global/build.ts
@@ -187,6 +187,8 @@ export function GlobalModeBuildPlugin({ uno, ready, extract, tokens, filter, get
                 ? result.getLayers(undefined, Array.from(vfsLayers))
                 : result.getLayer(layer) || ''
               return css
+                .replace(/\n/g, '')
+                .replace(/(?<!\\)(['"])/g, '\\$1')
             })
           }
         }