I hope this is the right place to post this question. I'm in the process of modifying my header. I'm using the 'SE Square Left' theme, but it appears to be a modification of Prosilver, and apparently relies on many of Prosilver's files.
I want to include a bunch of elements in the headerbar, including a drop-down menu, various links and an advertising banner. Yes, it sounds like a lot, but I'm trying to somewhat replicate the theme we modded for phpBB2 and the result worked well.
First, I removed the site logo. That worked fine.
Then I added an advertising banner after the search box. This at first was a problem as it overlapped the bottom of the headerbar area, so I needed to add depth to the headerbar. After a lot of fiddling, I was able to change the line "height: 90px" to "height: 150px" in the colours.css file, but this was in the SE Square Left theme, not Prosilver (and from the top of this thread, they use another file to adjust the height, I think it's Prosilver's common.css). Is there a good reason to change it on one theme rather than the other?
And after refreshing the theme, I was able to fit the banner in the new 150px deep headerbar.
But I need more
Here's the problem. The Site Name and Search Box show in the (vertical) middle of the headerbar area, and each as about 20 pixels of blank space above and below them. It's like either the Site Name/Search have padding around them, or the headerbar has inner padding. In any case, I would like to remove most of that blank space and tighten up the vertical area. But I can't seem to find where that padding is generated in order to control it.
Thanks for any help on this.