XSL companion, The

Object positioning

By default, block and in-line objects are positioned on the page, or within containing blocks, as described above. Each object is simply placed after the preceding object, either in the block-progression direction, or in the line-progression direction. However, the Position attribute allows for other options. Apart from the default value of 'static', it can also take the values 'fixed', 'relative' and 'absolute'. The Top, Right, Bottom and Left attributes are used to position the object, though their relevance depends on which position option is chosen.

A 'fixed' object is placed in a fixed location relative to the page edges ...