静态页样式 先清除浏览器默认样式--代码

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, img, ins, kbd, q, s, samp, small,
strike, strong, sub, sup, tt, var, u, i, center,
dl, dt, dd, ol, ul, li, fieldset, form, label,
legend, table, caption, tbody, tfoot, thead, tr,
th, td, article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup, menu,
nav, output, ruby, section, summary, time, mark, audio, video {
margin: 0;
padding: 0;
border: 0;
font-size: 100%;
font: inherit;
vertical-align: baseline;
}

/* ------- HTML5 display-role reset for older browsers ------- */

article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section {
display: block;
}
body {
line-height: 1;
}
ol, ul {
list-style: none;
}
blockquote, q {
quotes: none;
}
blockquote:before, blockquote:after, q:before, q:after {
content: '';
content: none;
}
table {
border-collapse: collapse;
border-spacing: 0;
}