html, body {
    background-color: black;
    height: 100%;
    margin: 0;
    padding: 0;
}

.main {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    z-index: 9999;
}

.logo {
    margin-bottom: 50px;
}

.crt::before {
  content: " ";
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: linear-gradient(rgba(18, 16, 16, 0.525) 40%, rgba(0, 0, 0, 0.25) 60%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
  z-index: 2;
  background-size: 100% 2px, 3px 100%;
  pointer-events: none;
}

@keyframes flicker {
  0% {
  opacity: 0.27861;
  }
  5% {
  opacity: 0.34769;
  }
  10% {
  opacity: 0.23604;
  }
  15% {
  opacity: 0.10626;
  }
  20% {
  opacity: 0.18128;
  }
  25% {
  opacity: 0.10626;
  }
  30% {
  opacity: 0.18128;
  }
  35% {
  opacity: 0.23604;
  }
}

.crt::after {
  content: " ";
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: rgba(18, 16, 16, 0.1);
  opacity: 0;
  z-index: 2;
  pointer-events: none;
  animation: flicker 0.15s infinite;
}