body {
  font-family: sans-serif;
  background-color: #f4f4f4;
  height: 100vh;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.container {
  background: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
  text-align: center;
}

input, select {
  padding: 10px;
  margin: 10px;
  width: 100px;
  font-size: 16px;
}

button {
  padding: 10px 20px;
  font-size: 16px;
  background-color: #007acc;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

#ergebnis {
  margin-top: 20px;
  font-size: 20px;
}