Silver Firefly 15 February 2009 I wanted to clarify something about the default browser text size and using the em unit. The article was a tad misleading when it covered the default browser text size and the em unit. A lot of designers have it in their heads that an em is equivalent to 16 pixels. An em is not equivalent to 16 pixels. It is equivalent to whatever is set in the user’s browser, which is commonly 16px but depending on the user, it can be 20px or 12px or whatever they have set in their browser’s settings. I hope after reading that statement, designers will start to realise that they have little control over how their website appears in other users’ browsers. The majority of the control lies in the user’s hands. Other than that, the article was very good.