The question is about uploading a file to a web server which could be accessed from a domain address and is not specific to WordPress only.
My server runs WordPress, so there's a japanaddicts.org directory in the root space. Now, I created a sub-domain through my hosting provider. The address is paperwork.japanaddicts.org
I checked through FTP, and saw that a directory named the same has been created. When I open it, then the htaccess folder, and add my paperwork.html file (with an embedded stylesheet), it doesn't work properly.
When I open paperwork.japanaddicts.org, it opens a directory listing, which is fine for a rudimentary start. But after opening the paperwork file, paperwork.japanaddicts.org/paperwork, it opens the html file, instead of parsing the code within.
Please advise on how to make that page view as a webpage with all the styles.