2000 Ford Focus Lose of power

I lose power while driving, all my lights and gauges turn off. The only light on is my airbag warning light on panel. When I come to a stop my car wants to shut off, when I start to accelerate its slow and acts like it's going to stall out. It gradually picks up speed and then it just shuts off. The whole car shuts off. I try starting it again and it goes "click click click". I get a jump and it starts up again then when I put it in drive it stalls out again. I changed my alternator yesterday, I was leaking power steering fluid and it got into my alternator so I change that out. The alternator had so much power steering fluid on it. It was gunky Guie black tar in it & on it so I change the alternator. I don't know what's causing it to lose power now, could you please help