My problem is that, on the front page, the content of the Content Region is bleeding over into the Sidebar First Region. To illustrate the problem, look at the first screenshot, and you'll see a border that covers the Sidebar First Region. This border is part of the code in the Content Region. The screenshot also shows Firebug info.
But when the same content is rendered on a normal page (not the front page) then the content of the Content Region does not bleed over into the Sidebar First Region. The second screenshot shows the same content rendered on a normal page, along with Firebug info.
I would appreciate suggestions on what I'm doing wrong or how I might go about redesigning things to get a functioning homepage.
The theme is a copy of Navin, which is based on Omega. I did not subtheme Navin, but rather made a copy. I'm pretty sure that everything was changed properly, but I acknowledge that my theme was not generated properly by subtheming Omega, nor subtheming Navin.
I have tried to create the front page using an Omega Panel and the same bleeding occurs.
I have not tried to create a homepage using Delta.
I have tried using Context to place the Sidebar First blocks in the Sidebar First Region and the same bleeding occurs.
I've been struggling with this for over a week. I'd really appreciate some suggestions. I'll do the work, but I'm just at a loss to know where to begin.