It makes no difference. You can format the code how you want (within reason)
Originally Posted by MechElec
I usually put one line rules on the same line so that the stylesheet doesn't spread out too much but for more than one line I use this format:
Of course you could just do this also:
The trailing semi colon is optional on the last element. It just means that there is more to follow but its good practice to add it when using multiple rules.