.link-site {
  display: block;
  position: fixed;
  z-index: 999;
  top: 41%;
  width: 30%;
  left: 35%;
  height: 5%;
}
.link-site {
  z-index: 888;
  top: 54%;
}
@media screen and (max-device-width: 1000px) {
   .link-site {
    width: 40%;
    left: 30%;
  }
}
@media screen and (max-device-width: 850px) {
   .link-site {
    width: 46%;
    left: 27%;
    top: 56%;
  }
}
@media screen and (max-device-width: 750px) {
   .link-site {
    width: 56%;
    left: 22%;
  }
}
@media screen and (max-device-width: 600px) {
   .link-site {
    width: 70%;
    left: 15%;
  }
}
@media screen and (max-device-width: 380px) {
   .link-site {
    width: 66%;
    left: 17%;
  }
}