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

header {
  background-color: #333;
  color: #fff;
  padding: 20px;
  text-align: center;
}

nav ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  background-color: #f2f2f2;
  overflow: hidden;
}

nav ul li {
  display: inline-block;
  margin-right: 10px;
}

nav ul li a {
  display: block;
  color: #333;
  text-decoration: none;
  padding: 10px;
}

section {
  margin: 20px;
}

article {
  margin-bottom: 20px;
  border-bottom: 1px solid #ccc;
}

article h2 {
  margin-top: 0;
}

footer {
  background-color: #333;
  color: #fff;
  padding: 10px;
  text-align: center;
}

form {
  margin-top: 20px;
  margin-bottom: 20px;
}

label {
  font-weight: bold;
}

textarea, input[type="file"], input[type="submit"] {
  margin-bottom: 10px;
}