css初始化

body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, code, form, fieldset, legend, input, button, textarea, p, blockquote, th, td {
margin: 0;
padding: 0;
}

body {
background: #fff;
color: #555;
font-size: 14px;
font-family: Verdana, Arial, Helvetica, sans-serif;
}

td, th, caption {
font-size: 14px;
}

h1, h2, h3, h4, h5, h6 {
font-weight: normal;
font-size: 100%;
}

address, caption, cite, code, dfn, em, strong, th, var {
font-style: normal;
font-weight: normal;
}

a {
color: #555;
text-decoration: none;
}

a:hover {
/*text-decoration: underline;*/
}

img {
border: none;
}

ol, ul, li {
list-style: none;
}

input, textarea, select, button {
font: 14px Verdana, Helvetica, Arial, sans-serif;
}

table {
border-collapse: collapse;
}

html {
overflow-y: scroll;
}

.clearfix:after {
content: ".";
display: block;
height: 0;
clear: both;
visibility: hidden;
}

.clearfix {
*zoom: 1;
}

.l {
float: left;
}

.r {
float: right;
}
.com-w{
1200px;
margin: 0 auto;
}