here is a collection of some of the tools that i used when creating this site. additionally, i have a collection of articles, videos and other material that informed its creation [here].
one site in particular deserves special acknowledgement. ribo.zone is incredible and inspires a lot of this design (including this template). please check them out
mdn: learn html and css
vscode: ide
dithermark: image dithering
js-paint: button and misc design