body {
  font-family: Arial, sans-serif;
  background-color: #f9f9f9;
  color: #222;
  margin: 0;
  padding: 0;
}
header img {
  max-width: 180px;
  margin: 30px auto 10px;
  display: block;
}
.container {
  max-width: 800px;
  margin: 20px auto;
  padding: 0 20px;
}
h1 {
  text-align: center;
  margin-bottom: 40px;
  color: #004080;
}
ul {
  list-style-type: none;
  padding: 0;
}
li {
  background-color: #fff;
  border: 1px solid #ddd;
  margin-bottom: 15px;
  padding: 15px;
  border-radius: 5px;
  transition: 0.3s;
}
li:hover {
  background-color: #eef6ff;
}
a {
  text-decoration: none;
  color: #004080;
  font-size: 18px;
  font-weight: bold;
}
a:hover {
  text-decoration: underline;
}
footer {
  text-align: center;
  font-size: 14px;
  color: #666;
  padding: 40px 10px 20px;
}