This property specifies the distance between the nearest border edges of a marker box and its associated principal box.

The offset may either be a user-specified (<length>) or chosen by the UA ('auto'). Lengths may be negative, but there may be implementation-specific limits.

<length> | auto | inherit

li:before { display: marker; marker-offset: 3em; content: counter(mycounter, lower-roman) "."; counter-increment: mycounter; }