d3-simpleCharts offers you direct access to a few d3 basic charts and let you add them into your WordPress posts fast and easy.
Good point & question !
YES indeed, the software is written so that it hides all the (= ugly) complexity of accounting of many separate charts + styles on the same page of WP.
So, you may have many pretty charts on the same page with their own original CSS styles attached to each one, independently. Everything is perfectly under your control transparently.
YES, you can now use 2 different methods to do this:
We encourage open collaborative development for programmers (by GitHub) over here:
Online manual & reference is building up gradually on GitHub's Wiki over here:
Very Good Further Links