body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background: url('https://cdn.cloudflare.steamstatic.com/apps/csgo/images/dust2_smoke.jpg') no-repeat center center fixed;
  background-size: cover;
  color: white;
  text-align: center;
}
.container {
  background-color: rgba(0, 0, 0, 0.7);
  padding: 50px 20px;
  margin: 5% auto;
  max-width: 600px;
  border-radius: 10px;
}
.download-btn {
  display: inline-block;
  padding: 15px 30px;
  background: #ff9900;
  color: #000;
  text-decoration: none;
  font-weight: bold;
  border-radius: 5px;
  margin-top: 20px;
}
.lang-switch {
  margin-top: 30px;
  font-size: 18px;
}