You can host your website on any computer that has a web server installed. Macs are capable of hosting websites using the Apache Web Server.

You really don't need to host your website on a Mac computer and it really makes no difference. The software Apache Web Server runs on Linux, Unix and Windows and is a free and open source web server. Macs that host your website will be running the same software as a Linux box running Apache Web Server.

But hey, if you really want to have your website running on a 100% Mac computer then consider MacDock for your Mac hosting needs. They are a bit pricier than a typical web host, but at least your site will be on a Mac and you'll feel cooler!