这其实不是ie官方的文档，好像是别人经过实践搞出来的ie6的默认样式，这个对我们驯服ie6很有参考价值。你会从根本理解ie出现的那些bug的原因。不过可惜ie不像firefox哪样通过在地址栏输入命令来直接查看firefox的默认样式。
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INTERNET EXPLORER 6 DEFAULT STYLE SHEET
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****** HYPOTHETICAL *******************
This is a work in progress.
Values are purely indicative.
For any suggestion or addenda,
please
contact me.
[Back to CSS Test]
================================

The uncertain values are marked with '<' and '>'.

html, body,
div, p,
blockquote,
ul, ol, dl,
dt, dd, address,
form, fieldset,
frame, frameset,
h1, h2, h3, h4,
h5, h6, hr, pre {display: block;}
head {display: none;}
html {margin: 0;}
body {margin: 8px;}
div {margin: 0;}
p {margin: 1em 0;}
blockquote {margin: 1em 40px;}
ul {margin: 1em 0 1em 40px; list-style-type: disc;}
li {display: list-item;}
ol {margin: 1em 0 1em 40px; list-style-type: decimal;}
ul ul {margin: 0 0 0 40px; list-style-type: circle;}
ul ul ul {margin: 0 0 0 40px; list-style-type: square;}
dl {margin: 1em 0;}
dd {margin-left: 40px;}
address {margin: 1em 0; font-style: italic;}
form, fieldset {margin: 0;}
fieldset {border: 1px inset <sistem color>;}
h1, h2, h3, h4, h5, h6 {font-weight: bold;}

h1 {font-size: 2em; margin: .6em 0;}
h2 {font-size: 1.5em; margin: .8em 0;}
h3 {font-size: 1.1em; margin: 1em 0; }
h4 {font-size: 1em; margin: 1.3em 0;}
h5 {font-size: 0.8em; margin: 1.6em 0;}
h6 {font-size: 0.6em; margin: 2.3em 0;}
hr {border: 2px outset <sistem color>;}
pre {margin: 1em 0; font-family: monospace; white-space: pre;}

a, i, cite, em, var, acronym,
tt, code, kdb, samp, del, ins,
u, dfn, sub, sup, big, small {display: inline; }
a:link {color: blue; text-decoration: underline; }
a:visited {color: purple; text-decoration: underline;}
i, cite, em, var {font-style: italic;}
tt, code, kbd, samp {font-family: monospace;}
del {text-decoration: line-through;}
u, ins {text-decoration: underline;}
sub {
vertical-align: sub;
font-size: smaller;
line-height: <value>;
}
sup {
vertical-align: super;
font-size: smaller;
line-height: <value>;
}
big {font-size: larger;}
small {font-size: smaller;}


input, textarea {display: inline-block;}