body, object, iframe, h1, h2, h3, h4, h5, h6, blockquote, a, code, em, img, q, small, strong, dd, dl, dt, li, ol, ul, fieldset, form, label, table, tbody, tr, th, td, input, textarea,span{
    padding:0;
    margin:0;
    list-style:none;
    font-family:"微软雅黑";
}
.nav{
  position:relative;
  z-index:5;
} 
.main{
    max-width:1366px;
    min-height:500px;
    margin:auto;
    position: relative;
}
.dqwz{
    font-size: 14px;
    left: 50%;
    position: absolute;
    top: 21px;
    z-index: 2;
    margin-left:-497px;
    color:#545454;

}
.dqwz a{
    font-size:14px;
    color:#545454;
}