fix: downgraded to tailwind v3

Author: brynblack

docusaurus.config.ts

@@ -28,7 +28,7 @@ const pluginTailwind = () => {
   return {
     name: 'docusaurus-plugin-tailwindcss',
     configurePostCss(postcssOptions: any) {
-      postcssOptions.plugins.push(require('@tailwindcss/postcss'));
+      postcssOptions.plugins.push(require('tailwindcss'));
       return postcssOptions;
     },
   };