Relative Size
Another approach (and the one often suggested) is to use relative-size measurements for font size instead of absolute sizes. These set the font size of an element as a ratio to the parent’s font size.
There are a few ways to accomplish this, but we will focus on two:
- percent (
%
) - ems (
em)
Both are relatively similar in how they work. A value of 100%
or 1em
will both leave the font size the same as the parent element. Likewise a value of 50%
or 0.5em
will reduce the font size by half.
NOTE: An em
is described as being the width of the letter ‘m’. So 1em is the width of an ‘m’ in the specified font.
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