diff --git a/.eleventy.js b/.eleventy.js
index 149ac48..7377f83 100644
--- a/.eleventy.js
+++ b/.eleventy.js
@@ -1,8 +1,11 @@
 const pluginNavigation = require("@11ty/eleventy-navigation");
 const markdownItAttrs = require("markdown-it-attrs");
+const autoprefixer = require("autoprefixer");
 const markdownIt = require("markdown-it");
 const htmlmin = require("html-minifier");
+const postcss = require("postcss");
 const yaml = require("js-yaml");
+const path = require("path");
 const sass = require("sass");
 const fs = require("fs");
 const markdownLib = markdownIt({
@@ -22,15 +25,29 @@ module.exports = function (eleventyConfig) {
     "assets/": "./",
   });
 
-  eleventyConfig.on("eleventy.before", () => {
+  eleventyConfig.on("eleventy.before", async () => {
     let files = fs.readdirSync("./src/scss/");
     files.forEach((file) => {
       // Compile SASS
-      let result = sass.compile("./src/scss/".concat(file), {
+      const result = sass.compile("./src/scss/".concat(file), {
         style: "compressed",
         sourceMap: false,
       });
       console.log(`[SCSS] ${file} compiled`);
+
+      // Optimize and write file with PostCSS
+      postcss([autoprefixer])
+        .process(result.css.toString())
+        .then((result) => {
+          fs.writeFile(
+            "./src/_includes/css/".concat(path.parse(file).name, ".css"),
+            result.css,
+            (err) => {
+              if (err) throw err;
+              console.log(`[POSTCSS] ${file} optimized`);
+            }
+          );
+        });
     });
   });
 
diff --git a/package.json b/package.json
index 9a4e010..faed6cc 100644
--- a/package.json
+++ b/package.json
@@ -10,12 +10,14 @@
   "dependencies": {
     "@11ty/eleventy": "^1.0.0",
     "@11ty/eleventy-navigation": "^0.3.2",
+    "autoprefixer": "^10.4.2",
     "chaffle": "^2.1.0",
     "html-minifier": "^4.0.0",
     "js-yaml": "^4.1.0",
     "markdown-it": "^12.2.0",
     "markdown-it-attrs": "^4.1.0",
     "npm-run-all": "^4.1.5",
+    "postcss": "^8.4.5",
     "sass": "^1.42.1"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 802bf97..354bbba 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -261,6 +261,18 @@ async@1.5.2:
   resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
   integrity sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=
 
+autoprefixer@^10.4.2:
+  version "10.4.2"
+  resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-10.4.2.tgz#25e1df09a31a9fba5c40b578936b90d35c9d4d3b"
+  integrity sha512-9fOPpHKuDW1w/0EKfRmVnxTDt8166MAnLI3mgZ1JCnhNtYWxcJ6Ud5CO/AVOZi/AvFa8DY9RTy3h3+tFBlrrdQ==
+  dependencies:
+    browserslist "^4.19.1"
+    caniuse-lite "^1.0.30001297"
+    fraction.js "^4.1.2"
+    normalize-range "^0.1.2"
+    picocolors "^1.0.0"
+    postcss-value-parser "^4.2.0"
+
 axios@0.21.4:
   version "0.21.4"
   resolved "https://registry.yarnpkg.com/axios/-/axios-0.21.4.tgz#c67b90dc0568e5c1cf2b0b858c43ba28e2eda575"
@@ -383,6 +395,17 @@ browser-sync@^2.27.7:
     ua-parser-js "1.0.2"
     yargs "^15.4.1"
 
+browserslist@^4.19.1:
+  version "4.19.1"
+  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.19.1.tgz#4ac0435b35ab655896c31d53018b6dd5e9e4c9a3"
+  integrity sha512-u2tbbG5PdKRTUoctO3NBD8FQ5HdPh1ZXPHzp1rwaa5jTc+RV9/+RlWiAIKmjRPQF+xbGM9Kklj5bZQFa2s/38A==
+  dependencies:
+    caniuse-lite "^1.0.30001286"
+    electron-to-chromium "^1.4.17"
+    escalade "^3.1.1"
+    node-releases "^2.0.1"
+    picocolors "^1.0.0"
+
 bs-recipes@1.3.4:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/bs-recipes/-/bs-recipes-1.3.4.tgz#0d2d4d48a718c8c044769fdc4f89592dc8b69585"
@@ -419,6 +442,11 @@ camelcase@^5.0.0:
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
   integrity sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==
 
+caniuse-lite@^1.0.30001286, caniuse-lite@^1.0.30001297:
+  version "1.0.30001301"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001301.tgz#ebc9086026534cab0dab99425d9c3b4425e5f450"
+  integrity sha512-csfD/GpHMqgEL3V3uIgosvh+SVIQvCh43SNu9HRbP1lnxkKm1kjDG4f32PP571JplkLjfS+mg2p1gxR7MYrrIA==
+
 chaffle@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/chaffle/-/chaffle-2.1.0.tgz#cd54e905a18bf3450e189637925a910218fe31c6"
@@ -732,6 +760,11 @@ ejs@^3.1.6:
   dependencies:
     jake "^10.6.1"
 
+electron-to-chromium@^1.4.17:
+  version "1.4.51"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.4.51.tgz#a432f5a5d983ace79278a33057300cf949627e63"
+  integrity sha512-JNEmcYl3mk1tGQmy0EvL5eik/CKSBuzAyGP0QFdG6LIgxQe3II0BL1m2zKc2MZMf3uGqHWE1TFddJML0RpjSHQ==
+
 emoji-regex@^8.0.0:
   version "8.0.0"
   resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-8.0.0.tgz#e818fd69ce5ccfcb404594f842963bf53164cc37"
@@ -941,6 +974,11 @@ follow-redirects@^1.0.0, follow-redirects@^1.14.0:
   resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.14.7.tgz#2004c02eb9436eee9a21446a6477debf17e81685"
   integrity sha512-+hbxoLbFMbRKDwohX8GkTataGqO6Jb7jGwpAlwgy2bIz25XtRm7KEzJM76R1WiNT5SwZkX4Y75SwBolkpmE7iQ==
 
+fraction.js@^4.1.2:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/fraction.js/-/fraction.js-4.1.2.tgz#13e420a92422b6cf244dff8690ed89401029fbe8"
+  integrity sha512-o2RiJQ6DZaR/5+Si0qJUIy637QMRudSi9kU/FFzx9EZazrIdnBgpU+3sEWCxAVhH2RtxW2Oz+T4p2o8uOPVcgA==
+
 fresh@0.5.2, fresh@^0.5.2:
   version "0.5.2"
   resolved "https://registry.yarnpkg.com/fresh/-/fresh-0.5.2.tgz#3d8cadd90d976569fa835ab1f8e4b23a105605a7"
@@ -1685,6 +1723,11 @@ mustache@^4.2.0:
   resolved "https://registry.yarnpkg.com/mustache/-/mustache-4.2.0.tgz#e5892324d60a12ec9c2a73359edca52972bf6f64"
   integrity sha512-71ippSywq5Yb7/tVYyGbkBggbU8H3u5Rz56fH60jGFgr8uHwxs+aSKeqmluIVzM0m0kB7xQjKS6qPfd0b2ZoqQ==
 
+nanoid@^3.1.30:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.2.0.tgz#62667522da6673971cca916a6d3eff3f415ff80c"
+  integrity sha512-fmsZYa9lpn69Ad5eDn7FMcnnSR+8R34W9qJEijxYhTbfOWzr22n1QxCMzXLK+ODyW2973V3Fux959iQoUxzUIA==
+
 negotiator@0.6.2:
   version "0.6.2"
   resolved "https://registry.yarnpkg.com/negotiator/-/negotiator-0.6.2.tgz#feacf7ccf525a77ae9634436a64883ffeca346fb"
@@ -1707,6 +1750,11 @@ no-case@^2.2.0:
   dependencies:
     lower-case "^1.1.1"
 
+node-releases@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-2.0.1.tgz#3d1d395f204f1f2f29a54358b9fb678765ad2fc5"
+  integrity sha512-CqyzN6z7Q6aMeF/ktcMVTzhAHCEpf8SOarwpzpf8pNBY2k5/oM34UHldUwp8VKI7uxct2HxSRdJjBaZeESzcxA==
+
 nopt@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/nopt/-/nopt-5.0.0.tgz#530942bb58a512fccafe53fe210f13a25355dc88"
@@ -1729,6 +1777,11 @@ normalize-path@^3.0.0, normalize-path@~3.0.0:
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
   integrity sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==
 
+normalize-range@^0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/normalize-range/-/normalize-range-0.1.2.tgz#2d10c06bdfd312ea9777695a4d28439456b75942"
+  integrity sha1-LRDAa9/TEuqXd2laTShDlFa3WUI=
+
 npm-run-all@^4.1.5:
   version "4.1.5"
   resolved "https://registry.yarnpkg.com/npm-run-all/-/npm-run-all-4.1.5.tgz#04476202a15ee0e2e214080861bff12a51d98fba"
@@ -1890,6 +1943,11 @@ path-type@^3.0.0:
   dependencies:
     pify "^3.0.0"
 
+picocolors@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-1.0.0.tgz#cb5bdc74ff3f51892236eaf79d68bc44564ab81c"
+  integrity sha512-1fygroTLlHu66zi26VoTDv8yRgm0Fccecssto+MhsZ0D/DGW2sm8E8AjW7NU5VVTRt5GxbeZ5qBuJr+HyLYkjQ==
+
 picomatch@^2.0.4, picomatch@^2.2.1, picomatch@^2.2.3:
   version "2.3.1"
   resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.3.1.tgz#3ba3833733646d9d3e4995946c1365a67fb07a42"
@@ -1937,6 +1995,20 @@ portscanner@2.1.1:
     async "1.5.2"
     is-number-like "^1.0.3"
 
+postcss-value-parser@^4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz#723c09920836ba6d3e5af019f92bc0971c02e514"
+  integrity sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==
+
+postcss@^8.4.5:
+  version "8.4.5"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.5.tgz#bae665764dfd4c6fcc24dc0fdf7e7aa00cc77f95"
+  integrity sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==
+  dependencies:
+    nanoid "^3.1.30"
+    picocolors "^1.0.0"
+    source-map-js "^1.0.1"
+
 pretty@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/pretty/-/pretty-2.0.0.tgz#adbc7960b7bbfe289a557dc5f737619a220d06a5"
@@ -2389,7 +2461,7 @@ socket.io@2.4.0:
     socket.io-client "2.4.0"
     socket.io-parser "~3.4.0"
 
-"source-map-js@>=0.6.2 <2.0.0":
+"source-map-js@>=0.6.2 <2.0.0", source-map-js@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.0.2.tgz#adbc361d9c62df380125e7f161f71c826f1e490c"
   integrity sha512-R0XvVJ9WusLiqTCEiGCmICCMplcCkIwwR11mOSD9CR5u+IXYdiseeEuXCVAjS54zqwkLcPNnmU4OeJ6tUrWhDw==