Add the following location to your Nginx server config:
location / {
fancyindex on ;
fancyindex_exact_size off ;
fancyindex_localtime on ;
fancyindex_default_sort name ;
fancyindex_directories_first on ;
fancyindex_footer /theme/footer.html ;
fancyindex_header /theme/header.html ;
fancyindex_hide_parent_dir on ;
fancyindex_ignore favicon.ico scripts styles ;
fancyindex_show_path off ;
fancyindex_time_format "%b %d %Y" ;
}
location /theme {
alias /${YOURPATH}/fancyindex-theme-topbar ;
}
}