在html中，即使我们没有指定页面元素显示的css样式，元素也会按照默认的的标准css样式去显示。因此掌握基本的html标签可以在一定程度上精简你的css代码，现将html标签的默认属性进行一定的汇总如下：
[php]
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 }
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 }
h4, p,blockquote, ul,fieldset, form,ol, dl, dir,menu { margin: 1.12em 0 }
h1 { font-size: 2em; margin: .67em 0 }
h2 { font-size: 1.5em; margin: .75em 0 }
h3 { font-size: 1.17em; margin: .83em 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 }
@media print {
h1 { page-break-before: always }
h1, h2, h3,h4, h5, h6 { page-break-after: avoid }
ul, ol, dl { page-break-before: avoid }
}
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 }
[/php]
当我们预想的css样式和默认样式一致时，我们就不必浪费不必要的css代码在那些页面元素上了，从而达到css代码的精简！
