The most common reason for this is copy-pasting from another editor, like MS Word, or another website. Often times, there are hidden styles that conflict with your themes styles and this can make things look differently than you expect.

No worries, these issues can be fixed! :)

If you do find yourself in a situation where your content just looks weird, here are a few tips and tricks that you can try...

The first thing I try is to select all of the text then click on the little thing that looks like an eraser to clear formatting. 

If that doesn't work...

The next little trick I use is to select all of the text and then choose a format like "Heading 1", and then go back and choose "paragraph" - this will sometime correct the issues.  (You may have to do this 2-3 times.)

If all else fails...

Select all of the text, copy it into your clipboard, and then delete the text from the article. Then select the "paste as text" tab at the top of the editor, paste the article in there - that's guaranteed to strip all of the formatting. You will then need to re-add your heading and hyperlinks, but that's still easier than retyping the whole article!

Did this answer your question?