I am in the process of making a book for my own and not to be published of course about introductory real analysis, my main concern is about the format that I have to set in order to ensure maximum simplicity, aesthetic design, and clear for the user to read. I have looked at what some users have posted here such as this Formatting and aligning real analysis proof and I found it to be not answering my desired question. I am looking for the following specification :
Font Size, margin size, and alignment.
Problem sets, theorem writing, and proof writing.
For (1) , the main concern is how related are font size with respect to the margin sizes and alignment. That is to ask, how should the font size and margin size be set to obtain an optimal resolution and a clear and easy to read text without confusing or finding it hard to follow when the reader looks at the text?
For (2) I apologize deeply if this question might sound an opinion based, but I believe that opinions for this question is extremely limited. My question is regarding the format of writing a theorem and writing a corresponding proof and likewise for problem sets and solutions to problem sets. What's best package to use in this case? I have seen some documents that have theorems and proofs framed inside a box. I would like to know if such environment adds a more clear texture for the reader and I would hope someone can recommend an alternative design for writing a theorem and a proof of a theorem especially if its a long theorem.