In my buddypress installation, when browsing with IE7 or Mozilla sidebar overlaps part of the content at its left. When using IE8 both the sidebar and content at left side looks perfect. Anyone knows how to fix this?
Before anything else, I see that you’re using the bp-default theme and that you’re making revisions directly on that theme. If or when you upgrade BuddyPress, any revisions you made will be overwritten. I recommend you create a child theme of bp-default theme and make your revisions in the child theme.
As for the “sidebar overlaps part of the content at its left”, this is to be expected when content exceeds maximum or minimum width as indicated in style.css where
you can instead change body width to fixed width of e.g. 980px or 1000px in your child theme’s style.css so you have a more realistic palette to place your videos, slideshows, etc.