Different font size

Hi

Does any one know where i kan set the output font size?

I have av project where I have a text Arial 72. When I publish the course the HTML looks like this:

"span.text42Font1 { font-size:120px; font-family:"Arial", sans serif; color:#d2fae4; font-weight:bold;}"

When one of my collegues opens the same project in Lectora and just publishes it the HTML looks like this:

"span.text42Font1 { font-size:96px; font-family:"Arial", sans serif; color:#d2fae4; font-weight:bold;}"

Does anyone know how i can get the two Lectora instalations to publish the same size?