The juxtaposed selector is an example of a very useful CSS selector and unfortunately not being used by Internet Explorer 6. The newer version of Internet Explorer 7 can already get the links. The proximate selector intentionally allows the use HTML element as a reference as juxtaposed with another element.

blockquote+p {margin-top: 0;}

A code of CSS explains the paragraph followed after with a quote will not need amargin on top. An important concept because writers, usually, mentions the name of the reference author when quoting whole paragraphs. Writers prefer use up free spaces between a paragraph and a quote.
An amazing example is using an adjacent selector from the horizontal lists. Most of the time, the web authors want to use it as a format, so the first item can look quite different from the other items among the list; if the web designers assigns a left border to each navigation item other than the first, the authors usually use a CSS code:

li+li {border-left: 1px solid black;}

It simply explains that a