.lang-switch {
  display: flex;
  gap: .3rem;
  margin-top: .3rem;
}
.lang-switch button {
  border: 1px solid #ccc;
  background: #fff;
  border-radius: 4px;
  padding: .25rem .5rem;
  cursor: pointer;
  color: blue;
}
.lang-switch button.active {
  background: #111;
  color: #fff;
}