body {
  overflow: hidden;
}

.app {
  background: #000000;
  color: #fff;
  letter-spacing: 0.08rem;
  width: 100vw;
  height: 100vh;
  position: relative;
  overflow: hidden;
}
.core,
.content,
.nav,
.mask,
.labels,
.label,
.core-layers {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}

.core {
  height: 16.52cm;
  top: 50%;
  margin-top: -8.26cm;
}
.core img {
  position: absolute;
  top: 0;
  left: 50%;
  height: 100%;
  width: auto;
}
.core-layer {
  display: none;
}
.core-layer.active {
  display: block;
  animation: fadeIn 1s;
}

.labels {
  width: 0.5rem;
  margin-left: -0.25rem;
  left: 50%;
  box-sizing: border-box;
  background: rgba(255,229,0,0.8);
  color: #8c9393;
  font-size: 1.4rem;
  line-height: 1.5;
}
.label {
  width: 400px;
  left: auto;
  right: -420px;
  text-align: left;
}
.label span {
  font-size: 1.2rem;
}

.content {
  width: 33.333333%;
  height: auto;
  top: 50%;
  transform: translateY(-50%);
  left: 5%;
  box-sizing: border-box;
  padding: 2rem;
  background: rgba(47, 48, 51, 0.98);
  border-radius: 1rem;
}
.content-image {
  display: none;
  width: 100%;
  height: auto;
}
.content-image.active {
  display: block;
  animation: fadeIn 1s;
}

.red {
  color: #ff7676;
}
.orange {
  color: #ffaa00;
}
.yellow {
  color: #ffff00;
}
.green {
  color: #3fe053;
}

@media screen and (max-height: 17cm) {
  .core {
    height: 96%;
    top: 2%;
    margin-top: 0;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
  }
}