Navigate to http://localhost:4200/ to see how your application looks like. The application displays categories, products, pricing, and more based on the Price List selected in the Storefront record. The app is automatically reloaded if you change any of the source files.
Bootstrap Theme Changes
Bootstrap and ngx Bootstrap (angular wrapper to Bootstrap) is installed during the npm install phase. The templates are built around the Bootstrap as a UI framework. You can change to any other mechanism if you don't want to use Bootstrap.
A variables.scss file is installed in the template. If you want to do some quick and easy theme change to your template, you can modify this file as per your requirement. All this follows standard Bootstrap framework constructs to modify cards, dropdowns, forms, buttons, and more.