CSS 101: Block Formatting Contexts » Yahoo! User Interface Blog (YUIBlog)

CSS 101: Block Formatting Contexts » Yahoo! User Interface Blog (YUIBlog)

A block formatting context is a box that satisfies at least one of the following:

* the value of “float” is not “none”,
* the used value of “overflow” is not “visible”,
* the value of “display” is “table-cell”, “table-caption”, or “inline-block”,
* the value of “position” is neither “static” nor “relative”.