* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background-color: #f0f0f0;
  padding: 20px;
}

.contenedor {
  max-width: 800px;
  margin: 0 auto;
  background-color: lightblue;
  padding: 20px;
  border-radius: 12px;
}

.bloque-imagen {
  height: 50vh;
  background-image: url("imagen.jpg");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  padding: 20px;
  border-radius: 12px;
  overflow-y: auto;
  color: white;
}

p {
  background-color: rgba(0,0,0,0.4);
  padding: 10px;
  border-radius: 6px;
  margin-bottom: 15px;
}