It could be the hoses or the rack they are all common for leaks you should get someone to check it out unless you like replacing stuff for fun.
Start with the bottom of the ps reservoir, make sure the clamps are tight and that's not causing it. Then wipe all the hoses off and try to see if the hose is leaking. It's common to leak at the joint. Then if it's not that check the ends of the rack, you'll need to remove the rubber boots, if it's leaking from there your rack needs a rebuild.