/* General Styles */
body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
  color: #333;
}

/* Page Titles */
h1, h2 {
  color: #2c3e50;
  text-align: center;
  text-shadow: 1px 1px 1px #ccc;
}

/* Navigation Menu */
nav {
  background-color: #333;
  padding: 15px;
}

nav ul {
  list-style-type: none;
  text-align: center;
  padding: 0;
}

nav ul li {
  display: inline;
  margin-right: 20px;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

nav a:hover {
  color: #3498db;
}

/* Main Content Box Model */
main {
  width: 80%;
  margin: 20px auto;
  padding: 20px;
  background-color: white;
  border: 1px solid #ddd;
}

/* Header and Footer */
header {
  background-color: #2c3e50;
  color: white;
  padding: 10px;
  text-align: center;
}

header h1 {
  text-transform: uppercase;
}

footer {
  text-align: center;
  padding: 20px;
  background-color: #333;
  color: white;
  margin-top: 20px;
}

/* Selectors */
#top {
  border-top: 5px solid #3498db;
}

.highlight {
  background-color: yellow;
}