:root {
    --green: #66ff66;
  }
  * {
    box-sizing: border-box;
  }
  body {
    background-color: #000;
    background: radial-gradient(#177317, #000);
    box-shadow: inset 0 0 30rem #000000;
    color: #66ff66;
    padding: 1rem;
    margin: 0;
    font-size: 1.5rem;
    text-shadow: 0 0 5px rgb(from #66ff66 calc(r + 40) calc(g + 40) b);
    font-family: "VT323", monospace;
    font-weight: 400;
    font-style: normal;
    height: 100vh;
    overflow: hidden;
  }
  #terminal-history {
    margin: 0;
    padding: 0;
    list-style: none;
  }
  #caret {
    position: relative;
    display: inline-block;
  /*   border: 1px solid #fff; */
    background-color: var(--green);
    width: 8px;
    height: 1.5rem;
  }
  #caret.blinking {
    animation: blink 1s steps(5, start) infinite;
    -webkit-animation: blink 1s steps(5, start) infinite;
  }
  @keyframes blink {
    to {
      visibility: hidden;
    }
  }
  @-webkit-keyframes blink {
    to {
      visibility: hidden;
    }
  }
  #alert {
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate3d(-50%, -50%, 0);
    font-size: 6em;
    pointer-events: none;
    animation: blink 1s steps(5, start) infinite;
    -webkit-animation: blink 1s steps(5, start) infinite;
  }
  #alert.hidden {
    display: none;
  }
  #tech-support {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    font-size: 1.2em;
    animation: blink 1s steps(5, start) infinite;
    -webkit-animation: blink 1s steps(5, start) infinite;
  }
  #tech-support.hidden {
    display: none;
  }
  .blackout {
    background: #000 !important;
    background-image: none !important;
    box-shadow: none !important;
    color: #000 !important;
    text-shadow: none !important;
  }
  .blackout * {
    visibility: hidden !important;
  }