css issue in string builder

Question

i am creating string builder table and apply css on it.i set table background image like this

sb.Append("<table style = 'background-image:url(C:\\Users\\Archit\\Downloads\\itbp.jpg)>")

but when i print to this table on pdf, background image not display and some columns height also not set.

 

any idea how to set table background image which shown on pdf.

and how to set column height manually?