原文来自：W3C (http://www.w3.org/TR/CSS21/sample.html)

感谢Junchen提供本信息

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; line-height: 1.12 }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, object, 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 }abbr, acronym   { font-variant: small-caps; letter-spacing: 0.1em }: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