.copyright {
  position: fixed;
  bottom: calc(var(--tab-bar-height));
  left: 10px;
  background: rgba(0,0,0,0.8);
  color: #fff;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 5px;
  z-index: 9999;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
}
.copyright a {
  color: #fff;
  text-decoration: underline;
}