Inline relative Text sizing vs using Styles...


I have noticed something odd trying to do some relative sizing of text.

If I say:

font-size:57% in the CSS Style Sheet Section, I get text about 7 pts.

however, if I say:

font-size:57% as an inline Span attribute, I get really tiny text (like 2 pts).

Why the difference?

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That's the "cascading" part of CSS.  How relative sizing works is that the size is relative to the size specified for all containing elements.  For example, suppose you had 16px defined for the body tag, 75% defined for p tags, and 50% defined for small tags.  Using the following markup fragment:

  I'm rendered at 16px.
  <p>I'm rendered at 75% of my containing element (16px) or 12px.  And, when you encounter <small>you should see me rendered at 50% of my containing element (12px) or 6px.</small>

This is probably the single biggest reason to be very careful about defining relative sizes on elements that will be nested.

Does that make sense?

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