HtmlCssLengthUnit

CSS pixels.

Points.

Picas.

Inches.

Centimeters.

Millimeters.

Quarter millimeters.

The element font size.

The root element font size.

One percent of the default viewport width.

One percent of the default viewport height.

One percent of the smaller default viewport dimension.

One percent of the larger default viewport dimension.

One percent of the small viewport width.

One percent of the small viewport height.

One percent of the smaller small-viewport dimension.

One percent of the larger small-viewport dimension.

One percent of the large viewport width.

One percent of the large viewport height.

One percent of the smaller large-viewport dimension.

One percent of the larger large-viewport dimension.

One percent of the dynamic viewport width.

One percent of the dynamic viewport height.

One percent of the smaller dynamic-viewport dimension.

One percent of the larger dynamic-viewport dimension.

One percent of the query container width.

One percent of the query container height.

One percent of the query container inline size.

One percent of the query container block size.

One percent of the smaller query-container dimension.

One percent of the larger query-container dimension.

The element font's x-height, approximated as half the font size when metrics are unavailable.

The zero-glyph advance, approximated as 0.5em or 1em for upright vertical text when metrics are unavailable.