diff --git a/src/themes/oscar/assets/css/main.css b/src/themes/oscar/assets/css/main.css
index 80eaee1..87f2f72 100644
--- a/src/themes/oscar/assets/css/main.css
+++ b/src/themes/oscar/assets/css/main.css
@@ -1,8 +1,8 @@
 /* Basic  */
-/* @import 'https://fonts.googleapis.com/css2?family=Overpass+Mono:wght@400;700&display=swap';
-@import 'normalize.css';
-@import 'variables.css';
-@import 'common.css'; */
+@import 'https://fonts.googleapis.com/css2?family=Overpass+Mono:wght@400;700&display=swap';
+@import 'assets/css/normalize.css';
+@import 'assets/css/variables.css';
+@import 'assets/css/common.css';
 
 /* Layout */
 
diff --git a/src/themes/oscar/assets/css/postcss.config.js b/src/themes/oscar/assets/css/postcss.config.js
new file mode 100644
index 0000000..967fd80
--- /dev/null
+++ b/src/themes/oscar/assets/css/postcss.config.js
@@ -0,0 +1,15 @@
+const themeDir = __dirname + '/../../';
+
+module.exports = {
+  plugins: [
+    require('postcss-import')({
+        path: [themeDir]
+    }),
+    require('postcss-custom-media')({
+        path: [themeDir]
+    }),
+    require('postcss-nested')({
+        path: [themeDir]
+    }),
+  ]
+}
diff --git a/src/themes/oscar/layouts/partials/metas.html b/src/themes/oscar/layouts/partials/metas.html
index d9bee3c..2096cfe 100644
--- a/src/themes/oscar/layouts/partials/metas.html
+++ b/src/themes/oscar/layouts/partials/metas.html
@@ -10,10 +10,9 @@
 		<title>{{- if .IsHome }}{{ .Site.Title }}{{- else }}{{ .Title }} &middot; {{ .Site.Title }}{{- end }}</title>
 
 		<!-- CSS -->
-		{{- $inServerMode	:= .Site.IsServer }}
-		{{- $cssTarget		:= "css/style.css" }}
-		{{- $cssOptions		:= cond ($inServerMode) (dict "targetPath" $cssTarget "enableSourceMap" true) (dict "targetPath" $cssTarget "outputStyle" "compressed") }}
-		{{- $style			:= resources.Get "css/main.css" | toCSS $cssOptions }}
+		{{- $inServerMode := .Site.IsServer }}
+        {{ $options := dict "config" "assets/css/postcss.config.js" }}
+		{{ $style := resources.Get "css/main.css" | resources.PostCSS $options }}
 		<link rel="stylesheet" href="{{ $style.RelPermalink }}">
 		<link rel="stylesheet" href="{{ "css/fonts.css" | relURL }}">
 		{{ range .Site.Params.css -}}