html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: Arial, sans-serif;
  background-image: url('hintergrundbild.jpeg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

.button-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin: 100px 0;
}

.main-button {
  padding: 15px 40px;
  font-size: 20px;
  border-radius: 40px;
  background-color: rgba(255, 255, 255, 0.85);
  cursor: pointer;
  text-decoration: none;
  color: black;
  min-width: 200px;
  text-align: center;
  transition: background-color 0.3s;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

.main-button:hover {
  background-color: rgba(255, 255, 255, 1);
}