From http://www.w3schools.com (Copyright Refsnes Data)
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.
| Value | Description |
|---|---|
| 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 |
From http://www.w3schools.com (Copyright Refsnes Data)