body {
  margin: 0;
  padding: 0;
  background: linear-gradient(to bottom, #1a2a6c, #b21f1f, #fdbb2d);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: 'Segoe UI', sans-serif;
  color: #fff;
}

.container {
  text-align: center;
  padding: 20px;
}

.kreis {
  width: 120px;
  height: 120px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  margin: 30px auto;
  transform: scale(1);
}


@keyframes atmen {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.8); }
  100% { transform: scale(1); }
}

#anleitung {
  font-size: 20px;
  font-weight: bold;
  margin-top: 20px;
}

button {
  margin: 10px;
  padding: 12px 24px;
  font-size: 18px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background: #ffffff40;
  color: white;
  transition: background 0.3s;
}

button:hover {
  background: #ffffff70;
}