CSS text-box-trim & text-box-edge

Provides the ability to remove the vertical space appearing above and below text glyphs, allowing more precise positioning and alignment. Previously specified as the `leading-trim` & `text-edge` properties.

csspositiontrydescriptors api: align-self

csspositiontrydescriptors api: alignself

svgpreserveaspectratio api: align

css property: align-content: supported in flex layout: `stretch`

css property: align-self: supported in flex layout: `stretch`

css property: align-tracks

css property: alignment-baseline: central

html element: tr: align

html element: tr: valign

css stroke-align (previously stroke-alignment) property