body {
  background-color: #121212;
  color: #e0e0e0;
  font-family: "Courier New", monospace;
  margin: 0;
  padding: 0;
}

header {
  background-color: #1e1e1e;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #333;
}

header .logo h2 {
  margin: 0;
}

h2 a {
  text-decoration: none;
  color: inherit;
}

nav a {
  color: #cccccc;
  text-decoration: none;
  margin-left: 1rem;
  font-weight: bold;
}

nav a:hover {
  color: #ffffff;
}

main.lab-home {
  max-width: 800px;
  margin: 3rem auto;
  text-align: center;
  padding: 0 2rem;
}

.typing {
  overflow: hidden;
  white-space: nowrap;
  border-right: .15em solid #999;
  animation: typing 2s steps(30, end), blink-caret 0.8s step-end infinite;
}

@keyframes typing {
  from { width: 0 }
  to { width: 100% }
}

@keyframes blink-caret {
  from, to { border-color: transparent }
  50% { border-color: #999; }
}

.subtitle {
  color: #aaa;
  font-size: 1rem;
  margin-bottom: 2rem;
}

.lab-section {
  background-color: #1c1c1c;
  border: 1px solid #333;
  border-radius: 6px;
  padding: 1rem 2rem;
  margin-bottom: 2rem;
}

.lab-list {
  list-style-type: none;
  padding: 0;
  margin-top: 1rem;
}

.lab-list li {
  margin: 0.5rem 0;
}

.lab-list a {
  color: #66ccff;
  text-decoration: none;
}

.lab-list a:hover {
  text-decoration: underline;
}