css取消默认样式

/*
Yahoo! CSS Reset (YUI 3) http://developer.yahoo.com/yui/3/cssreset/ CSSresetr.com
*/
html{
color:#000;
background:#FFF;
}
body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, code, form, fieldset, legend, input, textarea, p, blockquote, th, td {
margin:0;
padding:0;
}
table {
border-collapse:collapse;
border-spacing:0;
}
fieldset, img {
border:0;
}
address, caption, cite, code, dfn, em, th, var {
font-style:normal;
font-weight:normal;
}
li {
list-style:none;
}
caption, th {
text-align:left;
}
h1, h2, h3, h4, h5, h6 {
font-size:100%;
font-weight:normal;
}
q:before, q:after {
content:'';
}
abbr, acronym {
border:0;
font-variant:normal;
}
sup {
vertical-align:text-top;
}
sub {
vertical-align:text-bottom;
}
input, textarea, select {
font-family:inherit;
font-size:inherit;
font-weight:inherit;
}
input, textarea, select {
*font-size:100%;
}
legend {
color:#000;
}
a{
text-decoration: none;
}