body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f9f9f9;
}
header, footer {
  background-color: #2c3e50;
  color: white;
  text-align: center;
  padding: 1em;
}
nav a {
  margin: 0 10px;
  color: white;
  text-decoration: none;
}
.logo {
  width: 100px;
}
main {
  padding: 20px;
}
.highlight {
  color: #e67e22;
  font-weight: bold;
}