idiot of the day is here

I just built my first rig today and placed the motherboard on top of a conductive stainless shelf.. tried to power on for like an hour wondering what the hell is wrong with my build.. It was powering on and off at one point too... Eventually figured out and got it working but how bad is this? lol System is running fine but I am wondering if I made any damage to the board. This is like the dumbest thing ever smh