.page-nav .link {
  position: fixed;
  mix-blend-mode: difference;
  z-index: 290; }
  @media (min-width: 800px) {
    .page-nav .link {
      left: 7px;
      width: 100px;
      height: 100px; } }
  @media (max-width: 800px) {
    .page-nav .link {
      right: 5px;
      width: 75px;
      height: 75px; } }
  .page-nav .link a {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%; }
  .page-nav .link .symbol {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transition: opacity 0.3s; }
  .page-nav .link .symbol.outline {
    opacity: 1; }
  .page-nav .link .symbol.filled {
    opacity: 0; }
  .page-nav .link[active] .symbol.outline {
    opacity: 0; }
  .page-nav .link[active] .symbol.filled {
    opacity: 1; }

@media (min-width: 800px) {
  .page-nav .link:nth-of-type(1) {
    bottom: calc(50lvh + 70px); }
  .page-nav .link:nth-of-type(2) {
    top: 50lvh;
    transform: translateY(-50%); }
  .page-nav .link:nth-of-type(3) {
    top: calc(50lvh + 70px); } }

@media (max-width: 800px) {
  .page-nav .link:nth-of-type(1) {
    bottom: 170px; }
  .page-nav .link:nth-of-type(2) {
    bottom: 150px;
    transform: translateY(50%); }
  .page-nav .link:nth-of-type(3) {
    bottom: 130px;
    transform: translateY(100%); } }