How to move content to the left?

All those element styles aligning the content are a really bad idea. If you want to centre content headings for example, you should add a style that does that to your (child theme’s) stylesheet, for example:

#content h2 {
  text-align: center;
}

Similarly for paragraphs, although you could probably just do something like:

#content {
  text-align: left;
}

As for moving the content over to the left, I have to say that it seems pretty well centered to me, but if you really want to change it, you need a rule something like this:

#content {
  margin-right: /* something more than the current 130px */;
}

Obviously, replace the comment above with an integer greater than 130.

HTH

PAE