Modernize CSS

package.json

@@ -67,7 +67,7 @@
     "@babel/plugin-syntax-dynamic-import": "^7.2.0",
     "@babel/preset-env": "^7.16.11",
     "@dannycoates/webcrypto-liner": "^0.1.37",
-    "@fullhuman/postcss-purgecss": "^1.3.0",
+    "@fullhuman/postcss-purgecss": "^4.1.3",
     "@mattiasbuelens/web-streams-polyfill": "0.2.1",
     "@sentry/browser": "^5.30.0",
     "asmcrypto.js": "^0.22.0",
@@ -79,9 +79,9 @@
     "core-js": "^3.21.1",
     "crc": "^3.8.0",
     "cross-env": "^6.0.3",
-    "css-loader": "^3.6.0",
+    "css-loader": "^5.2.7",
     "css-mqpacker": "^7.0.0",
-    "cssnano": "^4.1.11",
+    "cssnano": "^5.1.12",
     "eslint": "^6.6.0",
     "eslint-config-prettier": "^6.15.0",
     "eslint-plugin-mocha": "^6.2.1",
@@ -105,8 +105,9 @@
     "nanotiming": "^7.3.1",
     "npm-run-all": "^4.1.5",
     "nyc": "^14.1.1",
-    "postcss-loader": "^3.0.0",
-    "postcss-preset-env": "^6.7.1",
+    "postcss": "^8.4.14",
+    "postcss-loader": "^4.2.0",
+    "postcss-preset-env": "^7.7.2",
     "prettier": "^1.19.1",
     "proxyquire": "^2.1.3",
     "puppeteer": "^2.0.0",
@@ -120,7 +121,7 @@
     "stylelint-no-unsupported-browser-features": "^4.1.4",
     "svgo": "^2.8.0",
     "svgo-loader": "^3.0.1",
-    "tailwindcss": "^1.9.6",
+    "tailwindcss": "^2",
     "val-loader": "^1.1.1",
     "webpack": "4.38.0",
     "webpack-cli": "^3.3.12",