Removing sub intro post from all pages - Blogs MU

I am trying to remove the sub intro post from all pages, not sure the home page. To do the home page I know it is

#top-content {
display: none;
}

I tried to use the source information on the pages to remove it by using the code below, which worked, but it also removed the main header from the home page, which I want to keep.

#header {
display: none;
}

I am sure this is pretty easy to do, but not sure what.