body {
  background: black;
  overflow: hidden;
  height: 100vh;
  margin: 0;
  padding: 0;
}

.app {
  padding: 0 20px;
  height: 100vh;
}

.x-icon {
  position: absolute;
  top: 15px;
  right: 15px;
  cursor: pointer;
  width: 48px;
  height: auto;
}

@media (min-width: 768px) {
  .x-icon {
    top: 40px;
    right: 40px;
  }
}

.logo {
  position: absolute;
  top: 100%;
  width: auto;
  height: 70px;
  left: 20px;
  right: 20px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .logo {
    height: 140px;
  }
}

.logo {
  animation: slideUp 14s linear infinite;
}

@keyframes slideUp {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(calc(-100vh - 70px));
  }
}

@media (min-width: 768px) {
  @keyframes slideUp {
    0% {
      transform: translateY(0);
    }
    100% {
      transform: translateY(calc(-100vh - 140px));
    }
  }
}