diff --git a/Elegant.nnwtheme/stylesheet.css b/Elegant.nnwtheme/stylesheet.css
index 202479c..25097b9 100644
--- a/Elegant.nnwtheme/stylesheet.css
+++ b/Elegant.nnwtheme/stylesheet.css
@@ -1 +1,4 @@
-/* style */
+/* layer: preflights */
+*,::before,::after{--un-rotate:0;--un-rotate-x:0;--un-rotate-y:0;--un-rotate-z:0;--un-scale-x:1;--un-scale-y:1;--un-scale-z:1;--un-skew-x:0;--un-skew-y:0;--un-translate-x:0;--un-translate-y:0;--un-translate-z:0;--un-pan-x: ;--un-pan-y: ;--un-pinch-zoom: ;--un-scroll-snap-strictness:proximity;--un-ordinal: ;--un-slashed-zero: ;--un-numeric-figure: ;--un-numeric-spacing: ;--un-numeric-fraction: ;--un-border-spacing-x:0;--un-border-spacing-y:0;--un-ring-offset-shadow:0 0 rgba(0,0,0,0);--un-ring-shadow:0 0 rgba(0,0,0,0);--un-shadow-inset: ;--un-shadow:0 0 rgba(0,0,0,0);--un-ring-inset: ;--un-ring-offset-width:0px;--un-ring-offset-color:#fff;--un-ring-width:0px;--un-ring-color:rgba(147,197,253,0.5);--un-blur: ;--un-brightness: ;--un-contrast: ;--un-drop-shadow: ;--un-grayscale: ;--un-hue-rotate: ;--un-invert: ;--un-saturate: ;--un-sepia: ;--un-backdrop-blur: ;--un-backdrop-brightness: ;--un-backdrop-contrast: ;--un-backdrop-grayscale: ;--un-backdrop-hue-rotate: ;--un-backdrop-invert: ;--un-backdrop-opacity: ;--un-backdrop-saturate: ;--un-backdrop-sepia: ;}::backdrop{--un-rotate:0;--un-rotate-x:0;--un-rotate-y:0;--un-rotate-z:0;--un-scale-x:1;--un-scale-y:1;--un-scale-z:1;--un-skew-x:0;--un-skew-y:0;--un-translate-x:0;--un-translate-y:0;--un-translate-z:0;--un-pan-x: ;--un-pan-y: ;--un-pinch-zoom: ;--un-scroll-snap-strictness:proximity;--un-ordinal: ;--un-slashed-zero: ;--un-numeric-figure: ;--un-numeric-spacing: ;--un-numeric-fraction: ;--un-border-spacing-x:0;--un-border-spacing-y:0;--un-ring-offset-shadow:0 0 rgba(0,0,0,0);--un-ring-shadow:0 0 rgba(0,0,0,0);--un-shadow-inset: ;--un-shadow:0 0 rgba(0,0,0,0);--un-ring-inset: ;--un-ring-offset-width:0px;--un-ring-offset-color:#fff;--un-ring-width:0px;--un-ring-color:rgba(147,197,253,0.5);--un-blur: ;--un-brightness: ;--un-contrast: ;--un-drop-shadow: ;--un-grayscale: ;--un-hue-rotate: ;--un-invert: ;--un-saturate: ;--un-sepia: ;--un-backdrop-blur: ;--un-backdrop-brightness: ;--un-backdrop-contrast: ;--un-backdrop-grayscale: ;--un-backdrop-hue-rotate: ;--un-backdrop-invert: ;--un-backdrop-opacity: ;--un-backdrop-saturate: ;--un-backdrop-sepia: ;}
+/* layer: my-style */
+/* my style */
diff --git a/constant.ts b/constant.ts
new file mode 100644
index 0000000..43f85de
--- /dev/null
+++ b/constant.ts
@@ -0,0 +1 @@
+export const DIRECTORY_NAME = 'Elegant.nnwtheme'
diff --git a/main.css b/main.css
new file mode 100644
index 0000000..466dabb
--- /dev/null
+++ b/main.css
@@ -0,0 +1 @@
+/* my style */
diff --git a/uno.config.ts b/uno.config.ts
new file mode 100644
index 0000000..2cd4c0b
--- /dev/null
+++ b/uno.config.ts
@@ -0,0 +1,29 @@
+import fs from 'node:fs'
+import { defineConfig } from 'unocss'
+import { DIRECTORY_NAME } from './constant'
+
+function getMainCss() {
+  const env = process.env.NODE_ENV
+  const input = fs.readFileSync('main.css', 'utf8')
+  if (env === 'development')
+    return input
+  // eslint-disable-next-line @typescript-eslint/no-require-imports, @typescript-eslint/no-var-requires
+  const CleanCSS = require('clean-css')
+  return new CleanCSS().minify(input).styles
+}
+
+export default defineConfig({
+  cli: {
+    entry: {
+      patterns: [`${DIRECTORY_NAME}/template.html`],
+      outFile: `${DIRECTORY_NAME}/stylesheet.css`,
+    },
+  },
+
+  preflights: [
+    {
+      layer: 'my-style',
+      getCSS: () => getMainCss(),
+    },
+  ],
+})