初始化代码

    a, abbr, acronym, address, applet, article, aside, audio,
b, blockquote, big, body,
center, canvas, caption, cite, code, command,
datalist, dd, del, details, dfn, dl, div, dt, 
em, embed,
fieldset, figcaption, figure, font, footer, form, 
h1, h2, h3, h4, h5, h6, header, hgroup, html,
i, iframe, img, ins,
kbd, 
keygen,
label, legend, li, 
meter,
nav,
object, ol, output,
p, pre, progress,
q, 
s, samp, section, small, span, source, strike, strong, sub, sup,
table, tbody, tfoot, thead, th, tr, tdvideo, tt,
u, ul, 
var{
    background: transparent;
    border: 0 none;
    font-size: 100%;
    margin: 0;
        padding: 0;
        border: 0;
        outline: 0;
    vertical-align: top; }

ol, ul {
    list-style: none;
}
blockquote, q {
    quotes: none;
}
table, table td { 
    padding:0;
    border:none;
    border-collapse:collapse;
}
img {
    vertical-align:top; 
}
embed { 
    vertical-align:top;
}

.cf:before,.cf:after { 
    content:""; 
    display:table;
}
.cf:after { 
    clear:both;
}
.cf { 
    zoom:1; 
    clear:both;
}