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 }/*以上列表元素默认状态下一块状显示，未显示的将以内联元素显示，该列表针对HTML4版本，部分元素在XHTML1中将废弃*/

head { display: none }/*默认不显示*/

tr { display: table-row }/*默认为表格行显示*/

thead { display: table-header-group }/*默认为表格头部分组显示*/

tbody { display: table-row-group }/*默认为表格行分组显示*/

tfoot { display: table-footer-group }/*默认为表格底部分组显示*/

col { display: table-column }/*默认为表格列显示*/

colgroup { display: table-column-group }/*默认为表格列分组显示*/

caption { display: table-caption }/*默认为表格标题显示*/

th { font-weight: bolder; text-align: center }/*默认为表格标题显示，呈现加粗居中状态*/

caption { text-align: center }/*默认为表格标题显示，呈现居中状态*/

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 }/*定义sub元素默认为下标显示*/

sup { vertical-align: super }/*定义sub元素默认为上标显示*/

table { border-spacing: 2px; }

thead, tbody, tfoot { vertical-align: middle }/*定义表头、主体表、表脚元素默认为垂直对齐*/

td, th { vertical-align: inherit }/*定义单元格、列标题默认为垂直对齐默认为继承*/

s, strike, del { text-decoration: line-through }/*定义这些元素默认为删除线显示*/

hr { border: 1px inset }/*定义分割线默认为1px宽的3D凹边效果*/

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" }/*定义换行元素的伪对象内容样式*/

:before, :after { white-space: pre-line }/*定义伪对象空格字符的默认样式*/

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 }/*定义BDO元素当其属性为DIR="ltr"时的默认文本读写显示顺序*/

BDO[DIR="rtl"] { direction: rtl; unicode-bidi: bidi-override }/*定义BDO元素当其属性为DIR="rtl"时的默认文本读写显示顺序*/

*[DIR="ltr"] { direction: ltr; unicode-bidi: embed }/*定义任何元素当其属性为DIR="ltr"时的默认文本读写显示顺序*/

*[DIR="rtl"] { direction: rtl; unicode-bidi: embed }/*定义任何元素当其属性为DIR="rtl"时的默认文本读写显示顺序*/

@media print { /*定义标题和列表默认的打印样式*/

    h1 { page-break-before: always }

    h1, h2, h3, h4, h5, h6 { page-break-after: avoid }

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

}

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 }/*以上列表元素默认状态下一块状显示，未显示的将以内联元素显示，该列表针对HTML4版本，部分元素在XHTML1中将废弃*/ 

button, textarea, input, object, select { display:inline-block; }