When you develop an Angular application, you will come to a point where you need to serve it on localhost over HTTPS. This is often the case if you need to interact with an identity provider such as Facebook, Auth0, … And by the way, testing locally with HTTPS could be useful to detect mixed content issues that can break a production HTTPS website.

Improving load time is crucial for the success of your application. One way to reduce this load time is to optimize the CSS loading but it is quite tricky, because CSS files are render-blocking. This means that the browser must download and parse these files before starting to render the web page.