Nuxt/examples/routes-transitions/assets/main.css

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
}

.container {
  text-align: center;
  padding-top: 200px;
  font-size: 20px;
  transition: all .5s cubic-bezier(.55,0,.1,1);
}

.page-enter-active, .page-leave-active {
  transition: opacity .5s
}
.page-enter, .page-leave-active {
  opacity: 0
}

.bounce-enter-active {
  animation: bounce-in .8s;
}
.bounce-leave-active {
  animation: bounce-out .5s;
}
@keyframes bounce-in {
  0% { transform: scale(0) }
  50% { transform: scale(1.5) }
  100% { transform: scale(1) }
}
@keyframes bounce-out {
  0% { transform: scale(1) }
  50% { transform: scale(1.5) }
  100% { transform: scale(0) }
}

.slide-left-enter,
.slide-right-leave-active {
  opacity: 0;
  transform: translate(30px, 0);
}
.slide-left-leave-active,
.slide-right-enter {
  opacity: 0;
  transform: translate(-30px, 0);
}