chore: update PostCSS & Tailwind major version .

package.json

@@ -3,7 +3,7 @@
     "version": "0.0.1",
     "private": true,
     "devDependencies": {
-        "@tailwindcss/ui": "^0.1.3",
+        "@tailwindcss/ui": "0.7.2",
         "cssnano": "^4.1.10",
         "del": "^6.0.0",
         "gulp": "^4.0.2",
@@ -11,11 +11,12 @@
         "gulp-concat": "^2.6.1",
         "gulp-postcss": "^9.0.0",
         "npm-run-all": "^4.1.5",
-        "postcss": "^7.0.21",
-        "postcss-cli": "^6.1.3",
-        "purgecss": "^2.1.0",
+        "postcss": "8.1.10",
+        "postcss-cli": "8.3.0",
+        "postcss-nested": "^5.0.1",
+        "purgecss": "3.0.0",
         "shadow-cljs": "2.8.81",
-        "tailwindcss": "^1.3.4"
+        "tailwindcss": "2.0.1"
     },
     "scripts": {
         "watch": "run-p cljs:watch gulp:watch",

postcss.config.js

@@ -1,7 +1,7 @@
 module.exports = (ctx) => ({
   plugins: [
-    require("autoprefixer"),
-    require("tailwindcss")("tailwind.config.js"),
-    ctx.env === "production" ? require("cssnano")({ preset: "default" }) : null,
+    require('postcss-nested'),
+    require('tailwindcss')('tailwind.config.js'),
+    ctx.env === 'production' ? require('cssnano')({ preset: 'default' }) : null,
   ],
-});
+})