@media (max-width: 768px) {
.btn3{position:fixed;
  z-index:10;
  bottom:0px;
  border-top:1px solid #b3b3b3;
  background:#ae0001;
  width:100%;
  text-align:center;
  box-sizing:border-box;
  -webkit-box-sizing:border-box;}
.menu{position:relative;
    float:left;
    width:20%;
    height:50px;
   color: #fff;
    
    border-right:1px solid #832121;
    box-sizing:border-box;
    -webkit-box-sizing:border-box;}
 
  .menu a{color: #fff;}
    
 .menu i{   
  font-size: 20px;
    margin-top: 5px;
    text-align: center;
    width: 100%;  
    }
    
    
    
.menu:last-child{border-right:none;}
.new-sub{position:absolute;
      bottom:60px;
      z-index:10;
      width:200%;
      padding: 0px 10px;
      background: #fff;
      box-sizing:border-box;
      -webkit-box-sizing:border-box;
      border: 1px solid #EEEEEE;
      border-radius: 5px;
      display:none;
      font-size: 14px;
          left: -50%;}
    
 .new-sub ul{ margin: 0; padding: 0;}   
.new-sub li{width: 100%;
        background:#fff;
        float:none;
        box-sizing:border-box;
        -webkit-box-sizing:border-box;
        border-top:1px solid #f2f2f2;
        list-style-type: none;}
.new-sub li a{display:block;
          height:50px;
          line-height:50px;
          text-align:left;
          background:#fff;
          color:#333;
          border:none;
          text-align:center;
          font-size:14px;}
.sanjiao{position:absolute;bottom:5px;right:5px;width:0;height:0;border:5px solid transparent;border-right:5px solid #fff;border-bottom:5px solid #fff;}
.bt-name{font-size:16px;color:#000;}
.bt-name a{display:block;font-size:16px;color:#000;}
.new-sub .tiggle{
	width:0px;
      height:0px;
      position:absolute;
      left:50%;
      margin-left:-10px;
      bottom:-9px;
      border-top:10px solid #EEEEEE;
      border-left:10px solid transparent;
      border-right:10px solid transparent;
      z-index:10;
  }
  .new-sub .innertiggle{
  	width:0px;
      height:0px;
      position:absolute;
      left:50%;
      margin-left:-9px;
      bottom:-8px;
      border-top:9px solid white;
      border-left:9px solid transparent;
      border-right:9px solid transparent;
      z-index:11;
  }
  }