.lang-switcher{
  position: fixed;
  inset-inline-end: 16px;
  bottom: 16px;
  z-index: 999999;
}
.lang-switcher button{
  border: none;
  padding: 10px 14px;
  border-radius: 999px;
  box-shadow: 0 6px 18px rgba(0,0,0,.15);
  font-weight: 600;
  cursor: pointer;
}