body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: url('kartell.png') no-repeat center center fixed;
  background-size: cover;
  font-family: Arial, sans-serif;
  color: white;
}

.block {
  background: rgba(0, 0, 0, 0.6); /* dunkler Block, leicht transparent */
  margin: 160px auto;
  padding: 40px;
  width: 80%;
  max-width: 1100px;
  text-align: center;
  border-left: 5px solid silver;
  border-radius: 10px;
}

h1, h2, h3 {
  margin-top: 20px;
  margin-bottom: 10px;
}

hr {
  border: 1px solid #666;
  margin: 30px 0;
}

a.button {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 24px;
  background-color: white;
  color: black;
  text-decoration: none;
  font-weight: bold;
  border-radius: 5px;
  transition: background-color 0.3s ease;
}

a.button:hover {
  background-color: silver;
}