CSS namespaces

Using the `@namespace` at-rule, elements of other namespaces (e.g. SVG) can be targeted using the pipe (`|`) selector.

CSS3 tab-size

Method of customizing the width of the tab character. Only effective using 'white-space: pre', 'white-space: pre-wrap', and 'white-space: break-spaces'.

css property: ruby-overhang: spaces

css property: text-decoration-skip-spaces

css property: text-decoration-skip-spaces: all

css property: text-decoration-skip-spaces: end

css property: text-decoration-skip-spaces: none

css property: text-decoration-skip-spaces: start

css property: white-space-collapse: break-spaces

css property: white-space-collapse: preserve-spaces

css property: white-space: break-spaces

css property: white-space: preserve-spaces

css selector: type selector (`elementname`): namespaces (`ns|elementname`)

css selector: universal selector (`*`): namespaces (`*|*`)

types: `attr()`: `<attr-name>` accepts namespaces

attribute_values: named spaces (e.g. `thinmathspace` to mean 3/18em)

elements: mfrac: linethickness: named spaces (e.g. `thinmathspace` to mean 3/18em)

elements: mo: named spaces (e.g. `thinmathspace` to mean 3/18em) for `lspace`, `maxsize`, `minsize` and `rspace` attributes

elements: mpadded: named spaces (e.g. `thinmathspace` to mean 3/18em)

elements: mspace: named spaces (e.g. `thinmathspace` to mean 3/18em) for `width`, `height` and `depth` attributes

elements: mtable: width: named spaces (e.g. `thinmathspace` to mean 3/18em)

global_attributes: mathsize: named spaces (e.g. `thinmathspace` to mean 3/18em)