How to better display a long list of parameter: value items?

I would like to ask if there is a better way of displaying a number of categories containing long lists of "parameter: value" items, than what I have at the moment:

Category1

parameter1: value1
parameter2: value2

Category2

parameter1: value1
parameter2: value2

There are 4 categories. Parameters number in a list can get up to 15 items. Value can be one word as well as a number of sentences. All this info should be visible simultaneously.

Thanks