I solved most of them using plain CSS except for the 7th puzzle, I had to right-click the solution canvas and view that within another tab so that I had access

I solved most of them using plain CSS except for the 7th puzzle, I had to right-click the solution canvas and view that within another tab so that I had access to the dev tools colour picker tool. Great puzzle though! Got me thinking about the possibilities of such projects. A community run puzzle platform where people have to pay a few thousand Satoshi to play. Or simply a lottery style game that clocks out at midnight every day.