#tpBtn {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 30px;
  z-index: 2147483647;
  font-size: 18px;
  border: none;
  outline: none;
  background-color: #003f70;
  color: white;
  cursor: pointer;
  padding: 15px;
  border-radius: 4px;
}

#tpBtn:hover {
  background-color: #555;
}


@media only screen and (max-width: 768px) {
  #tpBtn {
    bottom: 10px;
    right: 15px;
    font-size: 14px;
    padding: 5px;
  }
}