Different font/website sizes (or "shrinking") with 127.0.0.1 and localhost

[DanielTakeshi]

Hello,

I opened up this website and used jekyll serve --watch as you instructed so that we could see the blog.

The first screen I saw this this:

then I clicked on the homepage text and saw this:

The website seems to shrink, though I can get the first font size's back by using 127.0.0.1 instead of localhost.

Do you have a suggested fix for this, or is it something on my end? My information:

• Mac OS X, El Capitan
• Google Chrome Version 58.0.3029.110 (64-bit)
• Output from ruby -v is:
  ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-darwin15]
• Output from jekyll -v is:
  jekyll 3.4.3

EDIT: to clarify, the first screenshot is the output from http://127.0.0.1:4000/, and the second scrrenshot is from http://localhost:4000/ after I clicked on the words "Pixyll" in the upper left corner.