.floating-back-btn {
  position: fixed;
  left: 20px;
  bottom: 20px;
  display: inline-block;
  padding: 10px 15px;
  background: #0073aa;
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  border-radius: 9999px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  z-index: 999999;
  line-height: 1;
}
.floating-back-btn:hover,
.floating-back-btn:focus {
  background: #005a87;
  color: #fff;
}
@media (max-width: 782px) {
  .floating-back-btn {
    left: 16px;
    bottom: 16px;
    padding: 10px 14px;
    font-size: 14px;
  }
}