CSS slice is different from the PS. In principle, the CSS slice is the picture fragment positioning. Now many of the buttons and other small pictures of the web site are handled like this. It requests the server 1 times to complete several traditional picture positioning, and the advantage is obvious.
here to use backgroud-position, the usage is:
backgroud:url (picture address) image fragment in the upper left corner of the picture fragment, the width of the picture fragment is high
for example:
.lt; html.gt;
;
.Lt; style.gt;
.M{
background:url (
