body {
  background-color: black;
  color: #00aa00;
  font-family: monospace;
  padding: 20px;
  font-size: 2em;
  overflow: hidden;
}
.bios-screen {
  max-width: 900px;
  margin: auto;
  white-space: pre;
  position: relative;
}
.logo {
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  image-rendering: pixelated;
  filter: contrast(1.5) brightness(0.8);
}
.scanlines::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.1) 3px
  );
  pointer-events: none;
}
.cursor {
  animation: blink 1s step-start infinite;
}
@keyframes blink {
  50% { opacity: 0; }
}
.setup-menu {
  margin-top: 40px;
  white-space: pre;
  display: none;
}
.visible {
  display: block;
}
.selected {
  background-color: #004400;
  padding: 0 4px;
}

.setup-menu {
  display: none;
  background-color: black;
  color: #00FF00;
  font-family: 'Courier New', monospace;
  padding: 10px;
  border: 1px solid #00FF00;
  margin-top: 10px;
}
.menu-box ul {
  list-style: none;
  padding: 0;
}
.menu-box li {
  margin: 5px 0;
}