CSS Issues

Most of my pages have installed correctly, I had an issue with the sidebar showing up below eleven columns but i brought it back up. the issues im having are these:

class=”eleven columns clearfix” is too wide, causing it to come edge to edge with my sidebar.

my posts, when displayed in recent posts on my homepage are off centered, the images are lined up correctly, however the post titles are indenting.

Also in recent posts on the home page, only one column shows up of posts, most likely because of the issue above.