In high-quality printing, marks are often added outside the page box. This property specifies whether cross marks or crop marks or both should be rendered just outside the page box edge.

[ crop || cross ] | none | inherit

@page :left {  margin-left: 4cm;  margin-right: 3cm;}

@page :right {  margin-left: 3cm;  margin-right: 4cm;}

@page { margin: 2cm }

@page :first {  margin-top: 10cm    /* top margin on first page 10cm */}