What is the most affordable and easy to use website design software for a mac?

Also is there any web design websites that are helpful?

I don’t use a mac… but there should be pre-installed software on your mac that says i-life or something and you can publish automatically to the web and stuff…. also go to apple.com/downloads and they have this awesome software (which i wish they made for windows… sniffle lol) that allows you to code css design and all that