Error: PostCSS plugin tailwindcss requires PostCSS 8

錯誤訊息如下：

Module build failed (from ./node_modules/postcss-loader/src/index.js):
Error: PostCSS plugin tailwindcss requires PostCSS 8.
Migration guide for end-users:

解決方案：

npm uninstall tailwindcss postcss autoprefixer
npm install tailwindcss@npm:@tailwindcss/postcss7-compat postcss@^7 autoprefixer@^9