```css
body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: url("assets/fondo.jpg") center/cover no-repeat;
  color: #3a2c10;
  animation: fadeIn 2s ease-in-out;
}

.container {
  padding: 20vh 10vw;
  background-color: rgba(255, 255, 0, 0.75);
  border-radius: 10px;
  text-align: center;
}

.titulo {
  font-size: 2.5em;
  animation: dance 4s infinite alternate;
}

.descripcion {
  font-size: 1.2em;
  margin-top: 20px;
  line-height: 1.6;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes dance {
  0%   { transform: rotate(-1deg); }
  50%  { transform: rotate(2deg); }
  100% { transform: rotate(-1deg); }
}

.whatsapp {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #25D366;
  color: white;
  padding: 12px 18px;
  border-radius: 30px;
  font-weight: bold;
  text-decoration: none;
  box-shadow: 0 0 15px rgba(0,0,0,0.2);
}
```

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