I know nothing about the element in HTML, but it strikes me that both the board and the pieces have "background-image". Could it be that some browsers don't know which background image should be farther back? And are displaying the pieces behind the board?
Does anybody know whether there's an "image" or "foreground-image" possibility in ? Or whether I'm barking up the wrong tree?
I am very sorry. There was a small bug in html code: "width: 17 px" instead of "width: 17px". Only Firefox has problem with it. I add a new version of Shogi (Tori Shogi) a I change a several pieces of code.