Help with some spilled gas?

[darb]

Spilled some gas in my carport today as I was filling my 5 gal, container from my 55 gal drum. Carport it concrete and the gas made a sort of stain spot where it was spilled. Will this hurt anything? Probably spilled 10-12 ounces. Anything special I need to put on it or just leave it as it is? Oh yeah, I was cussing myself, pretty badly TIA

Brad