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- CSS Length Reference
- To bound, or not to bound, that is the question
-
- It's quite a reasonable request, really, and it's already been implemented
- for HTML. That is, length bounding. It makes little sense to let users
- define text blocks that have a font-size of 63,360 inches (that's a mile,
- by the way) or a width of forty-fold the parent container.
-
- But it's a little more complicated then that. There are multiple units
- one can use, and we have to a little unit conversion to get things working.
- Here's what we have:
-
- Absolute:
- 1 in ~= 2.54 cm
- 1 cm = 10 mm
- 1 pt = 1/72 in
- 1 pc = 12 pt
-
- Relative:
- 1 em ~= 10.0667 px
- 1 ex ~= 0.5 em, though Mozilla Firefox says 1 ex = 6px
- 1 px ~= 1 pt
-
- Watch out: font-sizes can also be nested to get successively larger
- (although I do not relish having to keep track of context font-sizes,
- this may be necessary, especially for some of the more advanced features
- for preventing things like white on white).
-
- vim: et sw=4 sts=4
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