Taishan Office Technology Lecture: how to calculate page blank (margin)

　　 I talked about the calculation of page width . When you use it , You will find that there is an area up, down, left and right that cannot be entered , That is, the so-called blank . How big is this blank ？ How to calculate the ？

• Left and right blank ：1 Inch

1 Inch ,2.54 centimeter ,96 Pixels .

• Blank up and down ：1.25 Inch

1.25 Inch ,3.18 centimeter ,120 Pixels .

　　 This is the default situation . In fact, you can also customize .

　　 Because this is the standard size （ We can call it an integer ）, So there is no problem when zooming in . For non integer cases , How to calculate ？ This will be studied later .