Across (horizontal)=Landscape.
Vertical=Portrait
across the width of the page
Across (horizontal)=Landscape. Vertical=Portrait
This is not a question, but my best guess of what you want to know is the word landscape.
Landscape Orientation
Normally we print on pages in Portrait mode, but if you are printing the other way, it is called Landscape. They their names from the usual orientation of paintings of each type.
This question is not clear, but my best guess is that you are looking for landscape (print with the long edge of the paper on the top).
That is the way English is written.
Across the width. Portrait - width < height Lanscape width > height Typically achieved by rotating paper though a right angle!
what is the width of a page in mm or cm
dot matrix
This is not a question, but you might be asking about landscape printing in MS Access. If this does not explain what you want to know, ask the question again using words that make it clear what you want to know.
The width of the web page depends on the screen's size. But the standard width for the body (or wrapper/visible part) is 960px.