CSS, units and inheritance

Styles are inline declarations such as style="font-size:11pt;color:#12665B". Later duplicate declarations override earlier ones. Property names are normalized; values must match the finite supported grammar. There is no stylesheet/class/selector cascade, !important, CSS variable evaluation, flexbox or grid.

Physical units

Model geometry and *-mm attributes use numeric millimeters without a unit suffix.
Font sizes accept explicit pt, mm or px. Nonzero unitless CSS font sizes are rejected.
CSS margins/padding accept mm, pt, px and unitless zero.
Image dimensions additionally accept percentages and unitless pixels; percentages use the containing region’s available dimensions.
1 inch = 25.4 mm = 72 pt = 96 CSS px. A line-height value is a multiplier, not a physical length.
Physical coordinates and dimensions must be finite; content must fit its available geometry.

Inheritance

Builtin/tag defaults sit below document-local theme/named styles and explicit ancestor/local values. Null model fields inherit. Explicit false/normal/none/zero/AUTO values remain meaningful overrides. Paragraph margins and pagination controls do not automatically propagate from a container to every child. Use named styles for reuse, with local overrides where needed.

Typography belongs to text; cell appearance belongs to tables/cells; decorated boxes expose their own background/padding/borders. A property accepted on one kind of element is not necessarily accepted everywhere.

Property reference

`font-family`

Values: One exact standard or registered family name; quoted single family allowed
Placement: Text and inherited region/block scopes
Default: Helvetica

No comma-separated fallback list; configure fallback families in DocumentSettings.

`font-size`

Values: Positive finite pt/mm/px length; nonzero unitless values are rejected
Placement: Text
Default: 11 pt body; typed Heading 14 pt; HTML headings have level-specific defaults

1 pt = 1/72 inch; 1 px = 1/96 inch.

`color`

Values: #RGB, #RRGGBB, black, white, gray, grey, red, green, blue, navy, teal
Placement: Text
Default: black

`font-weight`

Values: normal, bold, 400, 700
Placement: Text
Default: normal

Required font face must be registered or standard; no synthesis.

`font-style`

Values: normal or italic
Placement: Text
Default: normal

`text-decoration`

Values: none or underline
Placement: Text
Default: none

`text-align`

Values: left, center, right, justify
Placement: Paragraph/block text
Default: left

Independent from header rectangle placement; header align attribute excludes justify.

`line-height`

Values: Positive finite unitless multiplier
Placement: Text
Default: 1.2

Not CSS px/pt line-height.

`margin-top`

Values: Nonnegative mm/pt/px length; unitless zero
Placement: Text blocks
Default: 0

Apply to p/div or individual blocks, not region wrappers.

`margin-bottom`

Values: Nonnegative mm/pt/px length; unitless zero
Placement: Text blocks
Default: 0

`keep-together`

Values: auto, prefer, always
Placement: Blocks/groups
Default: Ordinary block policy; group uses a soft keep

Always can fail when content cannot fit.

`keep-with-next`

Values: auto, prefer, always
Placement: Blocks
Default: Ordinary block policy; headings keep with next

`widows`

Values: Positive integer
Placement: Paragraphs
Default: Native default unless configured

`orphans`

Values: Positive integer
Placement: Paragraphs
Default: Native default unless configured

`background-color`

Values: Supported named or hexadecimal color
Placement: Tables/cells and decorated box
Default: No fill

Not allowed on ordinary paragraphs/spans/images.

`width`

Values: Positive mm/pt/px/% length; unitless pixels
Placement: img only
Default: Fitting policy for containing region

CSS overrides width attribute; not for tables or canvas.

`height`

Values: Positive mm/pt/px/% length; unitless pixels
Placement: img only
Default: Fitting policy for containing region

`padding`

Values: One, two or four nonnegative lengths (mm/pt/px; zero unitless)
Placement: Table appearance and box
Default: Native/table theme defaults

Two values mean vertical/horizontal; four mean top/right/bottom/left; three-value form unsupported.

`border`

Values: none or width style color, e.g. 0.5pt solid #222222
Placement: Table appearance and box
Default: Native/table theme defaults

Supported styles: solid, dashed, dotted; use full declaration, no browser shorthand inference.

`vertical-align`

Values: top, middle or bottom
Placement: Table appearance
Default: Native/table theme defaults

`border-top`

Values: none or width style color
Placement: box only
Default: Inherits box border

Per-edge overrides are not table-cell CSS properties.

`border-right`

Values: none or width style color
Placement: box only
Default: Inherits box border

Per-edge overrides are not table-cell CSS properties.

`border-bottom`

Values: none or width style color
Placement: box only
Default: Inherits box border

Per-edge overrides are not table-cell CSS properties.

`border-left`

Values: none or width style color
Placement: box only
Default: Inherits box border

Per-edge overrides are not table-cell CSS properties.