IE7 and Firefox give different (quite different) results for the contents of this box because of an alignment bug in Firefox. The second and fourth lines are the same because a nonwhite character has been included in the s-span that contains the image. The character has been rendered invisible in the fourth line.
element styles
font-family:fixedsystext-indent:3%
position:absolute;text-decoration:none position:absolute;font-weight:normal position:relative position:relative;text-decoration:none position:relative;visibility:hidden;font-style:normal position relativeposition:relative;vertical-align:0%
<span> is seldom used here; it simply isn't needed anymore after
<s> and <u> have been stolen from the lawyers.
All the same, it is convenient to be able to refer to the various kinds of spans
as a-, u-, s-, b-, i-, and even em-spans. For these, cascading styles work properly
for all but the a-spans. Sometime back in the dark ages of browser science, possibly
in the process of fixing some other bug, there appeared the a-span-bug :
in a nested set of a-spans, the interior ones don't inherit their parents' styles (they
once did).
Nested alternations of u- and a-spans The style directives that appear above are the ones that seldom change, if ever, and they
are included in the stylesheet, msyms.css. Also included there
are quite a few identifiers, loosely organized by what they do. Some of them are
id= styles
id= styles
id= styles