1. Length Units#
The following length units are supported by the reStructuredText parser:
em (em unit, the element’s font size)
ex (ex unit, x-height of the element’s font)
mm (millimeters; 1 mm = 1/1000 m)
cm (centimeters; 1 cm = 10 mm)
in (inches; 1 in = 2.54 cm = 96 px)
px (pixels, 1 px = 1/96 in)
pt (points; 1 pt = 1/72 in)
pc (picas; 1 pc = 1/6 in = 12 pt)
This set corresponds to the length units in CSS2 (a subset of length units in CSS3).
The following are all valid length values: “1.5em”, “20 mm”, “.5in”.
Length values without unit are completed with a writer-dependent
default (e.g. “px” with HTML, “pt” with
2. Percentage Units#
Percentage values have a percent sign (“%”) as unit. Percentage values are relative to other values, depending on the context in which they occur.