$ php artisan ui bootstrap --auth
$ composer require laravel/ui
npm install bootstrap
npm install sass
npm install sass-loader
Second, create (if not created) resources/sass/app.scss and add this:
@import '~bootstrap';
Third, add compilation in webpack.mix.js:
mix.sass('resources/sass/app.scss', 'public/css')
Than, compile it with by run :
npm run dev
<link href="{{ asset('css/app.css') }}" rel="stylesheet">
$ php artisan ui bootstrap
$ npm install