I keep getting the error below when trying to install Tailwind with Vue.js:
Syntax Error: Error: PostCSS plugin tailwindcss requires PostCSS 8.
I've tried several answers from Error: PostCSS plugin tailwindcss requires PostCSS 8, including:
npm uninstall tailwindcss postcss autoprefixer
vue add tailwind 
And
npm uninstall tailwindcss postcss autoprefixer
npm install -D tailwindcss@latest postcss@latest autoprefixer@latest
But nothing works. My package.json includes:
"dependencies": {
  "postcss": "^8.4.20",
  "tailwindcss": "^3"
},
"devDependencies": {
  "@vue/cli-service": "~4.5.11",
  "postcss-cli": "^8.0.0",
  "sass": "^1.56.2",
  "sass-loader": "^10.4.1",
  "vue-cli-plugin-tailwind": "~3.0.0"
}
I use Node 14.5.0.
Any suggestion as to how to solve this issue?
 
    