Integration (specification) of mobile application design on the example of one screen or at least part of it?

Question

Layouts and prototypes

Good evening, I would be very grateful for an example of a layout design specification, using at least one screen as an example - a bitmap image (ok) with comments on sizes, indents, colors of elements and font specifications. Ideally, a psd layout file and a specification for it.
I am familiar with the materials habrahabr.ru/post/183836 and habrahabr.ru/company/mailru/blog/184654 , but after reading them there were questions.
In addition to the example, I would be grateful for links to other articles and answers to questions:
- in the font specification, specify developers in px or sp (Scale-independent Pixels )
- font values ​​\u200b\u200bcan be non-integer (ex. - 18.27) or they need to be rounded.