Quote:
Originally Posted by Jellby
It doesn't need to be 1em, depending on the image it may be larger or smaller, just specify the size in em units and it will scale with the text size.
However, note that the best size is font-depending, so what looks fine with one font may be a bit too large or a bit too small with another font.
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Well, thanks, but once I realised what "em" meant in this context the rest was straightforward.