Line-height
is a character formatting property, as well as a block level element. This section includes information about working with fonts and specifying font sizes.
Reader controls line height by specifying:
line-height
at the block level, which cannot be overridden. When you specify line-height
in absolute terms, Reader invokes the absolute line height mode. This means that a span of larger text contained within a block of text with an absolute line-height
specified, will not be accommodated and the larger text will be likely to break the boundary. This means that the tops of the ascenders on the larger text will disappear.
Generally, it is best to specify font sizes in scalable terms and allow the appropriate default line-height
to be applied.
An exception to this guideline applies if you use a subscript or superscript. The "at-least" line height mode may increase the line-height
of the line containing the subscript or superscript resulting in uneven line-spacing at the paragraph level.
Note that if you are using numbered sizes (1 through 7) to specify font sizes, and you apply a style property such as larger
or smaller
(which bump the font size either up over size 7 or under size 1) the property has no effect on actual size of the font or the line-height
. However, Reader recognizes the size increase or decrease to theoretical sizes that it can't display. A subsequent property that reverses the specification also has no visible effect because it neutralizes the previously unrendered property value.
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