verticalAlign

valuemeaning
baselinealign baseline of element with baseline of parent
middlealign vertical midpoint of the element (usually an image) with baseline plus half the x-height of parent.
subdisplay element in subscript style
superdisplay element in superscript style
text-topalign top of the element with top of the parent element's font
text-bottomalign bottom of element with bottom of the parent element's font
topalign top of element with the tallest element on the line
bottomalign bottom of element with lowest element on the line