body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f5f5f5;
}

nav ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
  background-color: #343a40;
  overflow: hidden;
}

nav li {
  float: left;
}

nav li a {
  display: block;
  color: #f8f9fa;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

nav li a:hover {
  background-color: #495057;
}

section {
  padding: 20px;
  background-color: #e9ecef;
  margin: 10px 0;
}

footer {
  background-color: #343a40;
  color: #f8f9fa;
  text-align: center;
  padding: 10px 0;
  position: fixed;
  width: 100%;
  bottom: 0;
}

.contact-link {
  display: inline-block;
  margin: 0 10px;
  color: #495057;
  text-decoration: none;
}

.contact-link:hover {
  text-decoration: underline;
}