Pixel-Perfect, why doesn't it converge?

Question

css

Hello.
Why don't blocks with the same markup and styles match the layout?
This happens with almost all projects, the lower the block is, the greater the discrepancy.
Examples with layout over layout and color inversion. The white and blue colors are an overlaid layout.
dl3.joxi.net/drive/2018/01/29/0010/1659/710267/67/...
dl3.joxi.net/drive/2018/01/29/0010/1659/710267/67/...

Answer 1

Graphic editors and browsers render fonts differently.