reset.css
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, font, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td { background: transparent; border: 0; margin: 0; padding: 0; vertical-align: baseline; font-size: 100%; font: inherit; -webkit-text-size-adjust: none; } body { line-height: 1; } table { border-collapse: collapse; border-spacing: 0; } object, :focus { outline: none; } article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section /* HTML 5 */ { display: block; } blockquote, q { quotes: none; } blockquote:before, blockquote:after, q:before, q:after { content: ''; content: none; } a img { border: none; } a{text-decoration: none; outline:none;} input,button,textarea,select,optgroup,option{ font-size: 100%; font: inherit; } .al { text-align: left; } .ar { text-align: right; } .ac { text-align: center; } .lc { margin: 0 auto; } .fl, .il .fl { float: left; } .fr, .il .fr { float: right; } .fc, .il .fc { float: none; clear: both; } .rel { position: relative; } .abs { position: absolute; } .il { list-style: none; } .il li { float: left; }