body {
  font: 1.2em / 1.5 system-ui;
  width: 50%;
  max-width: 700px;
  margin: 0 auto;
}

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
}

ol {
  display: flex;
  width: 70%;
  justify-content: space-between;
  list-style-type: none;
  padding: 20px 0;
  margin: 0;
  background: white;
}

section {
  padding-top: 60px;
}

a {
  color: red;
}

a:hover,
a:focus {
  text-decoration: none;
}

img {
  width: 480px;
  display: block;
  margin: 0 auto;
}

figcaption {
  text-align: center;
  color: #333;
  font-style: italic;
}

/* Turn cross-document view transitions on */
@view-transition {
  navigation: auto;
}

/* Keyframes for all the animations */
@keyframes slide-in-from-left {
  from {
    translate: -100vw 0;
  }
}
@keyframes slide-in-from-right {
  from {
    translate: 100vw 0;
  }
}
@keyframes slide-out-to-left {
  to {
    translate: -100vw 0;
  }
}
@keyframes slide-out-to-right {
  to {
    translate: 100vw 0;
  }
}

/* Determine what gets captured when the type is forwards or backwards */
html:active-view-transition {
  nav {
    view-transition-name: none;
  }
  section {
    view-transition-name: chapter;
  }
}

/* Animation styles for forwards type only */
html:active-view-transition-type(forwards) {
  &::view-transition-old(chapter) {
    animation-name: slide-out-to-left;
  }
  &::view-transition-new(chapter) {
    animation-name: slide-in-from-right;
  }
}

/* Animation styles for backwards type only */
html:active-view-transition-type(backwards) {
  &::view-transition-old(chapter) {
    animation-name: slide-out-to-right;
  }
  &::view-transition-new(chapter) {
    animation-name: slide-in-from-left;
  }
}

/* Set custom duration on all view transitions */
::view-transition-group(*) {
  animation-duration: 0.6s;
}