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baseline-shift Baseline Shift
The position of an inline graphic with respect to the current text baseline (above,
on, or below the baseline).
Usage/Remarks
Potential values include the values for baseline offset established as part of the
W3C
CSS specification and described below. In case of disagreement, values or definitions
below are superseded by those in any official W3C publication.
OPTIONAL on element: <inline-graphic>
| Value | Meaning |
|---|---|
| Text, numbers, or special characters | Names the position of the inline graphic. |
| Restriction | This is an optional attribute; there is no default. |
Suggested usage
Although designed to accept any text as its value, the following values are
suggested for describing the position (above or below the current text baseline) for
an inline graphic:
|
baseline
|
There is no shift; the inline graphic displays on the text baseline.
|
|---|---|
|
sub
|
The inline graphic is offset below the baseline by the same amount as an
ordinary subscript. (This is also an XSL-FO value.)
|
|
sup
|
The inline graphic is offset above the baseline by the same amount as an
ordinary superscript. (This is also an XSL-FO value.)
|
|
top
|
The inline graphic aligns with tallest character on the same line.
|
|
text-top
|
The inline graphic is offset above the baseline to the top of the tallest
ascender.
|
|
middle
|
The inline graphic is aligned to the middle of the text line (baseline plus
half x-height).
|
|
bottom
|
The inline graphic aligns with the lowest element on the same line.
|
|
text-bottom
|
The inline graphic is offset below the baseline, to the bottom of the lowest
descender.
|
|
percentage
|
The inline graphic is offset above (positive percent) or below (negative
percent) this percentage of the line height. 0% is baseline. (This is also an
XSL-FO value.)
|
|
length
|
The inline graphic is offset above (positive value) or below (negative
value) by this amount. This value must carry its units as well as a numeric
value. (This is also an XSL-FO value.)
|