body {
  margin: 0;
  font-family: sans-serif;
  background: #000;
  color: #fff;
  text-align: center;
}
.container {
  padding: 2rem;
}
.logo {
  width: 140px;
  margin-bottom: 1.5rem;
}
.btn {
  display: inline-block;
  margin: 1rem;
  padding: 0.75rem 1.5rem;
  background: #00BFFF;
  color: #000;
  text-decoration: none;
  border-radius: 6px;
}
.about {
  margin-top: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
footer {
  margin-top: 4rem;
  font-size: 0.9rem;
  color: #aaa;
}