/* Main styles */

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background-color: #222;
  color: #fff;
  padding: 10px;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

nav ul li a {
  color: #fff;
  text-decoration: none;
}

main {
  padding: 20px;
}

h1 {
  font-size: 36px;
  margin-top: 0;
}

h2 {
  font-size: 24px;
}

section {
  margin-bottom: 40px;
}

ul {
  list-style: disc;
  margin-left: 20px;
}

/* Responsive styles */

@media only screen and (max-width: 600px) {
  header {
    padding: 5px;
  }
  
  nav ul li {
    display: block;
    margin-bottom: 10px;
    }
    
    h1 {
      font-size: 24px;
    }
    
    h2 {
      font-size: 20px;
    }
  }