Number of columns in PSD?

Question

css

Added a picture to the attachment, tell me how many columns there are and how to count them correctly. (I just constantly try to count 12 columns and there are some problems with this)

Answer 1

Good day. You have 20 columns in a document.
To make 12 columns, you need to open View -> New Guide Layout -> And set the Number value to 12. Accordingly, set the desired distance between the columns in other values.