diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 00000000..1f77c906
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,11 @@
+# https://editorconfig.org
+
+root = true
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+quote_type = single
diff --git a/package.json b/package.json
index d4d18a8b..c68f7759 100644
--- a/package.json
+++ b/package.json
@@ -5,16 +5,15 @@
     "production": "cross-env NODE_ENV=production postcss public/tailwind.css -o public/build/tailwind.css",
     "start": "npm run serve"
   },
-  "dependencies": {
-    "autoprefixer": "^9.5.1",
-    "tailwindcss": "^1.0"
-  },
+  "dependencies": {},
   "devDependencies": {
     "@fullhuman/postcss-purgecss": "^1.2.0",
-    "concurrently": "^4.1.0",
+    "autoprefixer": "^9.8.5",
+    "concurrently": "^5.2.0",
     "cross-env": "^5.2.0",
     "cssnano": "^4.1.10",
     "live-server": "^1.2.1",
-    "postcss-cli": "^6.1.2"
+    "postcss-cli": "^7.1.1",
+    "tailwindcss": "^1.5.2"
   }
 }
diff --git a/postcss.config.js b/postcss.config.js
index e4fec190..05ddeabd 100644
--- a/postcss.config.js
+++ b/postcss.config.js
@@ -1,14 +1,9 @@
-const purgecss = require('@fullhuman/postcss-purgecss')({
-  content: ['./public/**/*.html'],
-  defaultExtractor: content => content.match(/[A-Za-z0-9-_:/]+/g) || []
-})
-
 module.exports = {
   plugins: [
     require('tailwindcss'),
     require('autoprefixer'),
-    ...process.env.NODE_ENV === 'production'
+    ...(process.env.NODE_ENV === 'production'
       ? [purgecss, require('cssnano')]
-      : []
-  ]
-}
+      : []),
+  ],
+};
diff --git a/tailwind.config.js b/tailwind.config.js
index af829e20..8412fc2a 100644
--- a/tailwind.config.js
+++ b/tailwind.config.js
@@ -1,7 +1,8 @@
 module.exports = {
+  purge: ["./public/**/*.html"],
   theme: {
     extend: {},
   },
   variants: {},
   plugins: [],
-}
+};