The power of Cwicly! With so many other website tools having so many frustrating limitations, it is a pleasant surprise to use one as flexible as Cwicly.
There is an issue with style overrides in the Post editor as mentioned by @owynter earlier in this thread:
If you experience this issue, as @sunny mentioned, the solution is to apply the auto value to the left and right margin for the specific element in the relative styles. Add the following to your relative style for paragraphs and it should resolve it: