(1) Are you sure you want to use graphics or pictures?
(2) If the picture is convenient for your artist/designer to design a picture with a height of 700PX*, edit the picture in a table or directly in the background; If you use pictures, let your company's art/design width be the same as above, and pictures within 300K can also be uploaded.
(3) I suggest you use the graphic method, which can take into account the customer experience.