*{ margin:0px; padding:0px;}
body 
{
    line-height:1.5;
    font-family:微软雅黑;
}
a{ text-decoration:none;} 
ul,ol,li{ list-style:none; }
img{ max-width:100%; }
.w1200{ width:1200px; margin:0 auto;}
.top{ padding:10px 0px 10px; overflow:hidden;}
.top .logo{ float:left; margin-right:20px; }
.top .nav{ float:right; margin-left:50px; }
.top .logo img{ margin-top:15px; }
.top .nav li{ float:left; padding:0px 20px; margin-right:40px; }
.top .nav li a{ line-height:60px; color:#000; }

.menu {
  display: none;
}

@media all and (max-width: 1199px) 
{
    .w1200 {
        width: 98%;
        margin-left:1%; 
    }
}


@media all and (max-width: 768px) 
{
    .menu {
      display: block;
      position:absolute;
      right:10px;
      top:20px;
    }
    #down{  display:none; }
    #down ul li {
      float: none;
      margin-right: 0px;
      text-align: center;
    }
    .top .nav {
        float: none;
        margin-left: 0px;
        width:100%;
        text-align:center;
    }
    .top .logo {
        float: none;
        margin-right: 0px;
    } 
}