Default style sheet for HTML 4

html, address,

blockquote,

body, dd, div,

dl,  dt, fieldset, form,

frame, frameset,

h1, h2, h3, h4,

h5, h6,  noframes,

ol, p, ul, center,

dir, hr, menu, pre { display: block }

li {  display: list-item }

head { display: none }

table { display: table }

tr  { display: table-row }

thead { display: table-header-group }

tbody {  display: table-row-group }

tfoot { display: table-footer-group }

col {  display: table-column }

colgroup { display: table-column-group }

td, th {  display: table-cell }

caption { display: table-caption }

th { font-weight:  bolder; text-align: center }

caption { text-align: center }

body { margin:  8px }

h1 { font-size: 2em; margin: .67em 0 }

h2 { font-size: 1.5em;  margin: .75em 0 }

h3 { font-size: 1.17em; margin: .83em 0 }

h4,  p,

blockquote, ul,

fieldset, form,

ol, dl, dir,

menu { margin:  1.12em 0 }

h5 { font-size: .83em; margin: 1.5em 0 }

h6 { font-size: .75em;  margin: 1.67em 0 }

h1, h2, h3, h4,

h5, h6, b,

strong { font-weight:  bolder }

blockquote { margin-left: 40px; margin-right: 40px }

i, cite,  em,

var, address { font-style: italic }

pre, tt, code,

kbd, samp {  font-family: monospace }

pre { white-space: pre }

button,  textarea,

input, select { display: inline-block }

big { font-size: 1.17em  }

small, sub, sup { font-size: .83em }

sub { vertical-align: sub }

sup  { vertical-align: super }

table { border-spacing: 2px; }

thead,  tbody,

tfoot { vertical-align: middle }

td, th { vertical-align: inherit  }

s, strike, del { text-decoration: line-through }

hr { border: 1px inset  }

ol, ul, dir,

menu, dd { margin-left: 40px }

ol { list-style-type:  decimal }

ol ul, ul ol,

ul ul, ol ol { margin-top: 0; margin-bottom: 0  }

u, ins { text-decoration: underline }

br:before { content: "\A"  }

:before, :after { white-space: pre-line }

center { text-align: center  }

:link, :visited { text-decoration: underline }

:focus { outline: thin  dotted invert }

/* Begin bidirectionality settings (do not change)  */

BDO[DIR="ltr"] { direction: ltr; unicode-bidi: bidi-override  }

BDO[DIR="rtl"] { direction: rtl; unicode-bidi: bidi-override  }

*[DIR="ltr"] { direction: ltr; unicode-bidi: embed }

*[DIR="rtl"] {  direction: rtl; unicode-bidi: embed }

@media print {

h1 {  page-break-before: always }

h1, h2, h3,

h4, h5, h6 { page-break-after:  avoid }

ul, ol, dl { page-break-before: avoid }

}

来自W3:http://www.w3.org/TR/CSS21/sample.html

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