.footer_bg {


  position: sticky;


  bottom: 0;


  left: 0;


  width: 100%;


  height: 75px;


  background: #ffffff;


  z-index: 99999999999;


}





.footer_bg ul>li {


  float: left;


  width: 25%;


}





.footer_bg a i {


  width: 30px;


  height: 30px;


  display: block;


  margin: 0 auto;


  margin-top: 10px;


}





.footer_bg a span {


  display: block;


  color: #333;


  font-size: 16px;


  margin-top: 5px;


  text-align: center;


}





.footer_bg ul>li.f1 a i {


  background: url(../images/f1.png) no-repeat center;


  background-size: contain;


}





.footer_bg ul>li.f2 a i {


  background: url(../images/f2.png) no-repeat center;


  background-size: contain;


}





.footer_bg ul>li.f3 a i {


  background: url(../images/f3.png) no-repeat center;


  background-size: contain;


}





.footer_bg ul>li.f4 a i {


  background: url(../images/f4.png) no-repeat center;


  background-size: contain;


}


 


.footer_bg ul>li:active a {


  color: #2d2d2d;


}