body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background-color: #f4f4f9;
  margin: 0;
  padding: 0;
}
.container {
  max-width: 800px;
  margin: 0px auto;
  background: #fff;
  border-radius: 8px;
}
h1 {
  color: #333;
}
h2 {
  color: #444;
}
p {
  color: #555;
}
ul {
  list-style: none;
  padding: 0;
}
ul li {
  background: #f9f9f9;
  margin: 5px 0;
  padding: 10px;
  border-left: 4px solid #007bff;
}
footer {
  text-align: right;
  margin-top: 20px;
  font-size: 0.9em;
  color: #777;
}

.header-navidad {
  background-image: url("./navidad.jpg");
  background-size: cover;
  background-position: center;
  width: 100%;
  height: 150px;
}