Hi @@dralveol,
Nice implementation. You can ignore the provided image in the downloaded project starter folder and extract all your assets from the provided Figma file. I think it will be a nice way to get familiar with asset extraction from design.
The answer to your question about using a nav tag in the service section of the page is yes. nav tag is basically to style page navigation with respect to the semantic structuring of a page.
Thus, a section or div might have sufficed to structure the section. I practically use a section tag for that section of the page since I consider the first card of the section to be the title of the whole section.