The last thing you need to decide is where you want the header placed horizontally. All you have to do is go to the top of the Visual editor tab and select either Align Left, which is highlighted here by the square, or Align Center, which is the second set of horizontal lines, or Align Right, which is the third set of horizontal lines.

I would recommend that you align all the headers in the same position to make the page look more organized, but you might have to have one or more aligned differently because of any images you are using.

This is a simple task but it can make a big difference in how our websites look and also in our SEO results.