diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 93aa180f..470d9e1f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -51,4 +51,7 @@ jobs:
         with:
           enable_cache: true
           format_output: true
-          prettier_opts: '{ "useTabs": true }'
\ No newline at end of file
+          prettier_opts: '{ "useTabs": true }'
+
+      - name: Check that Tailwind generated the utilities
+        run: grep -qE '\.flex\s*\{' _site/assets/css/main.css
diff --git a/assets/css/main.css b/assets/css/main.css
index ba6dbbc9..5173cf3a 100644
--- a/assets/css/main.css
+++ b/assets/css/main.css
@@ -3,12 +3,12 @@
 
 @import "tailwindcss" source(none);
 
-@source "../../_drafts/**/*.html";
-@source "../../_includes/**/*.html";
-@source "../../_layouts/**/*.html";
-@source "../../_posts/*.md";
-@source "../../*.md";
-@source "../../*.html";
+@source "./_drafts/**/*.html";
+@source "./_includes/**/*.html";
+@source "./_layouts/**/*.html";
+@source "./_posts/*.md";
+@source "./*.md";
+@source "./*.html";
 
 @theme {
   --font-sans: "IBM Plex Mono", sans-serif;
diff --git a/postcss.config.js b/postcss.config.js
index 62399708..15ce3a3b 100644
--- a/postcss.config.js
+++ b/postcss.config.js
@@ -2,7 +2,7 @@ const production = process.env.JEKYLL_ENV == 'production';
 
 module.exports = {
     plugins: [
-        require('@tailwindcss/postcss')({ optimize: production }),
+        require('@tailwindcss/postcss')({ base: __dirname, optimize: production }),
         ...(production
         ? [require('cssnano')({ preset: 'default' })]
         : [])