html,
body {
  margin: 0;
  padding: 0;
}

body {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: black;
}

* {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

section {
  position: relative;
}

section img {
  width: 100vw;
  height: 100vh;
  object-fit: contain;
  position: absolute;
}

.fade {
  animation: fade 1.5s ease-in-out infinite;
}

@keyframes fade {
  0% {
    opacity: 1;
  }

  10% {
    opacity: 0.8;
  }

  20% {
    opacity: 1;
  }

  30% {
    opacity: 0.6;
  }

  40% {
    opacity: 1;
  }

  50% {
    opacity: 0.2;
  }

  60% {
    opacity: 1;
  }

  70% {
    opacity: 0.5;
  }

  80% {
    opacity: 1;
  }

  90% {
    opacity: 0.3;
  }

  100% {
    opacity: 1;
  }
}