.page-nav ul {
  height: 0;
  width: 0; }

.page-nav .link .symbol,
.page-nav .link a {
  position: fixed;
  mix-blend-mode: difference; }
  @media (min-width: 800px) {
    .page-nav .link .symbol,
    .page-nav .link a {
      left: 7px;
      width: 100px;
      height: 100px; } }
  @media (max-width: 800px) {
    .page-nav .link .symbol,
    .page-nav .link a {
      right: 5px;
      width: 75px;
      height: 75px; } }
.page-nav .link a {
  z-index: 298; }

.page-nav .link .symbol {
  transition: opacity 0.3s;
  z-index: 290; }

.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) .symbol,
  .page-nav .link:nth-of-type(1) a {
    bottom: calc(50lvh + 70px); }
  .page-nav .link:nth-of-type(2) .symbol,
  .page-nav .link:nth-of-type(2) a {
    top: 50lvh;
    transform: translateY(-50%); }
  .page-nav .link:nth-of-type(3) .symbol,
  .page-nav .link:nth-of-type(3) a {
    top: calc(50lvh + 70px); } }

@media (max-width: 800px) {
  nav.page-nav {
    display: none; } }