I am working in a twenty eleven child theme. I want to change the margins of my post page and individual post pages only without it affecting my other pages. Right now, I have the Theme Extensions plug-in that allows for my sidebar to be viewed in individual post pages as well. I want to be able to change the width of the entry to 760px and the sidebar to 100px. I managed to change the css in my style sheet so that my photos are no longer being downsized. I was posting them at 760px but they were being automatically downsized. Now if you see my blog, the photo is appearing at 760px wide but it's overlapping into the widget sidebar. Any text also overlaps into the sidebar. I'm not sure what I need to edit to change this. I appreciate any help I can get, as I've editing this child theme with little experience!
my post page: http://www.jessicaquadra.com/blog