.foot{
  padding: 50px 0;
  background: #181725;
  color: #fff;
  position: relative;
}
.foot-wrap{
  width: 1200px;
  margin: 0 auto;
}
.foot-info{
  float: left;
  line-height: 3;
}
.foot-info i{
  margin-right: 20px;
}
.foot-info a{
  color: #fff;
}
.foot-contact{
  font-size: 0;
  float: right;
}
.foot-tel{
  font-size: 14px;
  display: inline-block;
  text-align: right;
  vertical-align: middle;
  padding-right: 15px;
}
.tel-num{
  font-size: 20px;
  margin-top: 10px;
}
.foot-qrcode{
  display: inline-block;
  vertical-align: middle;
}

.backtop{
  position: absolute;
  top: 0;
  right: 50px;
  z-index: 9;
  width: 16px;
}
.backtop p{
  margin-top: 5px;
  cursor: pointer;
  text-align: center;
  font-size: 12px;
  line-height: 1.2;
}
.bt-line{
  width: 2px;
  margin: 0 auto;
  background: #fff;
  height: 60px;
}
.bt-circle{
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
}