There is https://graphpaperpress.com/ I haven't used them for a while but they have good cred. Source: about 2 years ago

This code creates a simple HTML file with a header, an about me section, and a projects section. It also links to a CSS file that styles the website. You can customize this code to add your own content and styling. Or you can use a template from a site like HTML5 UP or Start Bootstrap to get started. - Source: dev.to / 14 days ago

Is there a specific place you look for these templates? A quick search found https://startbootstrap.com/. Source: 6 months ago

Great free templates on startbootstrap. They give you all the static files you need, all you need to do is customize. Https://startbootstrap.com/. Source: almost 2 years ago

We'll get some CSS and JS from https://startbootstrap.com before writing the code for dashboard-single.html and dashboard files. Click Download after going to the URL. Unzip the file and place the css and js directories in our project's static directory. Let's move on to the frontend of our application now. - Source: dev.to / over 2 years ago

Find an awesome pre-made template (I like to use ones that are built with Bootstrap4 and SASS, it makes them so much easier to edit) from somewhere like https://bootstrapmade.com/, https://wrapbootstrap.com/, or https://startbootstrap.com/. - Source: dev.to / over 2 years ago