It's difficult to example why, but Blocs app is by far the best easy to use website builder for Mac.
http://blocsapp.com
If I couldn't write code myself I would pick this app 1000 times above any other because this roots to the same frameworks we developers use when creating sites.
When I or any other developer would create a site we all create some sort of grid based on rows and columns to help us create some structure in the page layout. Every developer does this.
Look at my picture below. If you look at content on screen like this you're 70% done with web development because when your screen becomes smaller (iPhones) you are going the stack the blue, and both orange columns underneath each other instead of next to each other.
Seeing those lines is most of what web development is all about.
If you can't create those 'blocs' yourself, you should use the Blocs app because that's what Blocs does. You start with some grid, rows and choose your columns layout. When this is set. You are going to fill those columns ( content blocs ) with your own content, give it your text, colors, gradients, change the background or whatever. Make those content blocs pretty like you want them to be.
Press save or publish and the app generates better code, based on frameworks we also use and you probably have less chance of messing things up when switching between mobile, tablet and desktop views.
Give it a fair try, it's a little different approach from the so called iWeb apps from the early days where you could simply start with a blanc canvas and just draw and paint everywhere on screen. That's not how you should work those days, those columns and content blocs are so important.