diff --git a/package.json b/package.json
index cb8aefaa..908f07de 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
         "generateTypes": "tsc -p tsconfig.base.json --emitDeclarationOnly",
         "transpileES": "cross-env TS_NODE_PROJECT=tsconfig.es.json BABEL_ENV=es babel src --out-dir es --extensions .ts,.tsx,.js,.jsx --ignore 'src/test'",
         "processCSS": "postcss src/viewport/index.css --output es/style/style.css",
-        "copy-build": "copyfiles 'es/**/*' style/* 'type-declarations/**/*' package.json README.md dev-build",
+        "copy-build": "copyfiles 'es/**/*' 'type-declarations/**/*' package.json README.md dev-build",
         "gh-build": "npm run processCSS && cd examples && npm run build-example",
         "lint": "eslint src/**",
         "test": "vitest run",
@@ -28,7 +28,6 @@
     },
     "files": [
         "es",
-        "style",
         "type-declarations",
         "README.md",
         "package.json"
@@ -41,6 +40,10 @@
         "type": "git",
         "url": "https://github.com/simularium/simularium-viewer.git"
     },
+    "exports": {
+        ".": "./es/index.js",
+        "./style/style.css": "./es/style/style.css"
+    },
     "author": "",
     "license": "MIT",
     "devDependencies": {