.fox-bg{
   position:fixed;
   width:100%;
   height:100%;
   left:0;
   right:0;
   top:0; 
   display:none;
   background-color:rgba(100,100,100,0.6);
   z-index:999;
}
.fox-modal-fixed{
   display:none;
   z-index:10001;
   width: 60%;
   min-height:50px;
   position:fixed;
   left: 0;
   right: 0;
   top : 10px;
   margin : 0 auto;
   overflow:auto;
   background-color:white;
   
}
.fox-modal-sticky-btn{
  position:fixed;
  z-index:10000;
  left:0;
  bottom:0;
}