ID selectors: duplicated selectors

Stan Brown wrote:

In article <opryskt9ndv3x9px (AT) netnews (DOT) att.net> in
comp.infosystems.www.authoring.stylesheets, Sue Sims <sue (AT) css (DOT) nu
wrote:

*#z98y { letter-spacing: 0.3em }

It seems to me that using the universal selector in this example is wrong,
given the text above which includes "no two such attributes can have the
same value".


I'd say redundant rather than wrong. Unless I'm mistaken, that
selector is the same as "#z98y".

Unless you've defined a default namespace with the CSS3 "@namespace"
rule, in which case it only applies to elements in that namespace.