The start-indent property specifies the distance from the start-edge of the content-rectangle of the containing reference-area to the start-edge of the content-rectangle of that block-area.
Note: If this property has a negative value, it indicates an outdent.
|length||Default is 0pt. The start-indent specified as a fixed length|
|%||The start-indent specified as a % of the inline-progression-dimension of the containing reference-area|