1. for the body part, i changed the margin left and right to 20% each so the text would keep at the centre, i changed the font 
to Courier font to make it more like an old book. For the back ground image I made a varing color(mainly old book
like yellow and white) with linear-gradient to make the back ground looks pleasible and like old paper. I set the font size to large such
that the reader would not consume time to zoom in.

2. for each paragraph(p), I changed the text height to 2em so each row would be seperated moree clrealy, and text indent to 2 em, margin top and bottom to 0.5em so each paragraph would be distinguished more easily.     

3. for each header, i change the color to rgb(144, 119, 168) which is a light purple, this color would be more pleasible and still clear  with yellowish background. I bold the font and set the size to x-large to make them more obvious. I set the position to the centre which is more reasonable.

4. for each hyperlink(a) object I bold the font and set them to the center. 

5. for each img I set them to the center of the that row.

6. for each table object, I set them to the position center.