alignment-adjustプロパティ

Value：auto | baseline | before-edge | text-before-edge | middle | central | after-edge | text-after-edge | ideographic | alphabetic | hanging | mathematical | <percentage> | <length>
Initial：auto
Applies to：inline-level elements
Inherited：no
Percentages：refers to the 'line-height' of the element
Media：visual
Computed value：see text