https://ctan.math.illinois.edu/macros/latex/contrib/geometry/geometry.pdf
https://latex.org/forum/viewtopic.php?t=5880#
https://www.overleaf.com/learn/latex/headers_and_footers
https://latex.org/forum/viewtopic.php?t=5326
https://www.overleaf.com/learn/latex/Page_size_and_margins
