HTML默认样式
来源：PHPerz.com 作者：网络转载 发布时间：2007-12-21
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 }
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
