After a shower,opening the shower door(which swings outward) it drips onto floor creating a wet floor problem.How can I fix this?

It seems that your drip edge is missing. Shower doors that open that way typically have a "drip edge" that catches the water that drips down from the door - and directs it back into the base of the shower stall.

If you know the brand and model of your shower door set, you should check with the manufacturer to see if they have the part available - with instructions on how to install it.