Maybe my question is simple or not, but I did some research and I cannot find anything about it.
I reading an article and I have find the following in an example:
font: 27px/27px Baskerville, Palatino, "Palatino Linotype", serif;
What does the 27px/27px represent ?
The first is the size, the second is the line-height.
See the CSS specification for the font shorthand property for more information.