*{
    margin:0;
    padding:0;
}
body{
    font:14px "microsoft yahei",arial;
    color:#000;
    padding:0;
    margin:0;
}
ul,dl,li,dd,dt,p,h1,h2,h3,h4,h5,h6{
    list-style:none;
    margin:0;
    padding:0;
}
input{
    border:none;
}
img{
    vertical-align:bottom;
    border:0;
    margin:0px;
    padding:0px; 
}
a{
    text-decoration:none;
    color:#000;
}
a:hover{
    color:#000;
    text-decoration:none;
}
section:after,footer:after,nav:after,div:after{
    content:"";
    clear:both;
    display:block;
}
section:before,footer:before,nav:before,div:before{
    content:"";
    display:table;
}
.left{float:left;}
.right{float:right;}
.clear{clear:both;}
.wrap{
    width: 1000px;
    height:auto;
    margin:0 auto;
}