找到所有W3CHTML规范和供应商默认CSS样式表的GitHub存储库。
1. [Firefox的默认样式]
2. [InternetExplorer的默认样式]
3. [Chrome /Webkit的默认样式]
4.[Opera的默认样式]
5. [HTML4的默认样式（W3C规范）]
6. [HTML5的默认样式（W3C规范）]
根据默认W3C HTML4规范的示例：
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; unipre-bidi: embed }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, pre,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, tr { 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"; white-space: pre-line }center { text-align: center }:link, :visited { text-decoration: underline }:focus { outline: thin dotted invert }BDO[DIR="ltr"] { direction: ltr; unipre-bidi: bidi-override }BDO[DIR="rtl"] { direction: rtl; unipre-bidi: bidi-override }*[DIR="ltr"] { direction: ltr; unipre-bidi: embed }*[DIR="rtl"] { direction: rtl; unipre-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 }}
