I am a newbie trying to edit the twenty-eleven CSS so that the body of all my posts will appear in a box with black borders, padding, and its own background color. I don't want this to be applied to pages. I'm familiar with html, so I thought that CSS editing would be simple. It seems to be me that's simple, the few things that I've tried haven't worked. I thought that
<div id> =header">
<div id="body content">
seemed good, but it didn't work
The blog I need help with is protect-the-arroyo.com.