Of course it is. But there are some limitations to consider first:
You have to know how to set up WWW server software on your computer. It is a program that allows Internet users to access web files on your computer.
Your Internet service provider allows you to run websites on your personal computer. You will need to investigate your bandwidth quota.
The computer must always be turned on. If you turn it off or restart it, your website will become unavailable.
The web site will load slowly, as home Internet connections are not designed to serve web pages.