@media screen and (max-width: 850px) {
.sklad {
  position: fixed;
  display: none;
  width: 50px;
  height: 50px;
  }
}
@media screen and (min-width: 850px) {
.bsklad {
  position: fixed;
  display: none;
  width: 50px;
  height: 50px;
  }
}