What did you use to make your art gallery?
I used GLightbox.
How do I make a site like this?
Look at sites you like and try to recreate the things you want. Take a look at the /links page for tutorials on HTML/CSS and such. In doubt, a good search engine is your best friend. Elements such as :root, flexbox and CSS selectors can be very useful.
Can I link to you/copy your code/write a diatribe against your site and all it stands for?
Yes.
