.kefu { width: max-content; transform: translateX(-50%); margin-left: 0; overflow: initial; }
.kefu .box {
  position: absolute;
  left: 50%;
  top: 90px;
  transform: translateX(-50%);
  z-index: -1;
  transition: all 0.4s;
  width: 245px;
  height: 60px;
  background: #fff;
  box-shadow: 0 0 18px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 26px;
  font-family: 'din_mi';
  background: #0e6eb8;
  color: #fff;
  text-align: center;
}
.kefu .whatsapp.active .box {
  top: -65px;
}
.kefu li:nth-child(3) a { background-image: url('../images/whatsapp.png'); background-size: contain; }
.kefu li:nth-child(4) a { background-image: url(../images/wkf4.png); }