In migrating a site from a in-house CMS to Drupal 7, I'm trying to match font sizes between the older site and the newer one. In D7 we're using a Adaptive theme.
Using Firefox's inspector, the font size has a computed size of 10.88.
My question: in using only
font-size: x em specifications, how should I most properly match that? Do increase / decrease the initial em size setting in the Adaptive style sheets?