remove property in child

here my site

I want to change property for my site-generator-warpper. all in the child them.
i want the site-generator-warpper to be up near the word blog when i over commercial open it follow with it.
in my child theme i did this

#site-generator-wrapper {
			bottom: 0; ///remove this
			}

it was working in the dev tool in google chrome when i remove bottom: 0;property it was doing exactly what i want.

what i am missing here.