#footer {
  background-color: #343434;
  padding-bottom: .6rem;
}
#footer .link {
  display: block;
  height: .9rem;
  line-height: .9rem;
  font-size: .3rem;
  color: #999;
  border-bottom: 1px solid rgba(153, 153, 153, 0.6);
  text-align: center;
}
#footer .qr-code {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-size: .3rem;
  color: #fff;
}
#footer .qr-code img {
  width: 2rem;
  height: 2rem;
  margin-bottom: .3rem;
  margin-top: .4rem;
}