First of all, I was following this guide (and so others): https://medium.com/@jacobneterer/angular-and-tailwindcss-2388fb6e0bab I have been trying to install tailwind in my angular project with no success. Besides this, I have even created an angular project from 0 to try to do a basic installation and I have not been able to either. I have made all the configurations that appear in this quick guide, including changing the application builder for the custom webpack builder and the angular.json configuration. Current error on ng serve: Dependencies on package.json: "dependencies": { "@angular-builders/custom-webpack": "^9.1.0", "@angular/animations": "~9.0.1", "@angular/cli": "^9.1.12", "@angular/common": "~9.0.1", "@angular/compiler": "~9.0.1", "@angular/core": "~9.0.1", "@angular/forms": "~9.0.1", "@angular/platform-browser": "~9.0.1", "@angular/platform-browser-dynamic": "~9.0.1", "@angular/router": "~9.0.1", "rxjs": "~6.5.4", "tslib": "^1.10.0", "zone.js": "~0.10.2" }, "devDependencies": { "@angular-devkit/build-angular": "~0.900.2", "@angular/compiler-cli": "~9.0.1", "@angular/language-service": "~9.0.1", "@types/jasmine": "~3.5.0", "@types/jasminewd2": "~2.0.3", "@types/node": "^12.11.1", "codelyzer": "^5.1.2", "jasmine-core": "~3.5.0", "jasmine-spec-reporter": "~4.2.1", "karma": "~4.3.0", "karma-chrome-launcher": "~3.1.0", "karma-coverage-istanbul-reporter": "~2.1.0", "karma-jasmine": "~2.0.1", "karma-jasmine-html-reporter": "^1.4.2", "postcss-import": "^12.0.1", "postcss-loader": "^4.0.2", "postcss-scss": "^2.1.1", "protractor": "~5.4.3", "tailwindcss": "^1.8.10", "ts-node": "~8.3.0", "tslint": "~5.18.0", "typescript": "~3.7.5" } Continue reading...