Most likely, the problem is that somebody has posted a picture that is too wide for the screen. This forces all text on that page to become as wide as the picture. A good rule is to keep images below 500 pixels wide. I resize mine in Paint (comes with Windows) before uploading them. Real easy to do. I'll look into posting a demonstration, but no promise.
The "Black Death" of the 14th century killed half the population of Europe and Asia.
Please blah, blah, blah.
The life you save may be mine. Thank you!