The Drupal software we use for iMechanica makes the blog posts very wide. It may be a little uncomfortable to read from the far left of the window to the far right. With a window so wide, it's easy to lose your place in the reading in moving to the next line of text.
Fortunately, you can resize the window of your browser. There is a square on the lower right corner of each window that you can click and drag to resize the window. Just make the window thinner to adjust the width of the paragraphs. You can resize the paragraph width to be the same as that of a book, which is something we're comfortable with. It should make reading much easier and enjoyable. You should give it a try.