body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #000;
  color: #fff;
  text-align: center;
  padding: 40px 20px;
}
.container {
  max-width: 800px;
  margin: auto;
}
.logo {
  width: 180px;
  margin-bottom: 20px;
}
.tagline {
  font-size: 1.2rem;
  color: #ccc;
}
.patent {
  margin: 20px 0;
  font-style: italic;
  color: #aaa;
}
.devices ul {
  text-align: left;
  display: inline-block;
  margin-top: 10px;
}
.devices h2 {
  margin-bottom: 10px;
}
.contact a {
  color: #00ffd5;
  text-decoration: none;
}
.contact a:hover {
  text-decoration: underline;
}