Page Exporter | Page css/js not loading

Hi All, 

Once I get the downloaded package using page exporter (default template) for my project structure, html page doesn't load the css/js files, it renders unformatted data. Also, I observed, all the css/js available on the page is not part of the dowloaded package
My project has static pages, folder structure in the downloaded zip is as below:
/libs/

/etc/
/content/

I tried using page exporter for we retail website, everything worked fine there. Content structure for downloaded content was also bit different. All the design and styling files were captured under same path i.e /var/designs/page-name/all-files
/libs/
/var/

/content/

How can I fix the issue on my project? Do I need custom page exporter template here?