Extra margin in Default System on subpages like news On the default install, taking out all css. There is an extra margin space at the top of Chrome, and IE Edge but firefox is fine. I also checked out the error 404 page, and it too is fine like the standard layout page at home. 

However, if I click news or create a new extends sub folder, they will have an extra 26 pixels at the top. 

I noticed this trying to have a top bar flushed to the very top. I rolled back everything to stock and used the default template, took out all CSS from it, and still notice this issue. 

here is an image comparison of the two pages, no css using Chrome.



Thanks,

Logan.
Unlike some other CMS systems, Craft doesn't specify what your front-end templates should look like in any way (you could output your content as .txt files if you wanted to). It also doesn't add anything to your rendered page output that you didn't specify (with the exception of error info if 'devMode' is set to true). The default templates are really just there as placeholders so that you can confirm the system is working properly.

I can't say specifically what is causing your rendering/margin issue, but I would just ignore it and start with your own clean templates. All of the browsers that you mention also have some form of web inspector/development tools. If you really want to know you can 'inspect element' with the browser tools and see what css if any is causing the problem.