nav {
  background-color: #333;
  color: #fff;
  padding: 10px;
  text-align: center;
  font-size: 18px;
}

nav ul {
  list-style-type: none;
  margin: 0px auto;
  padding: 0px;
  max-width: 1000px;
}

nav ul li {
  display: inline;
  margin-right: 10px;
  align-items: center;
}

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

body {
  font-family: "Times New Roman", Times, serif;
  margin: 0;
  padding: 0;
  background-color: #fdf2eb;
}

h1 {
  font-size: 42px;
}

h2 {
  font-size: 30px;
}

h3 {
  font-size: 24px;
}

p {
  font-size: 18px;
}

main {
  max-width: 1000px;
  margin: 20px auto;
  padding: 20px;
  background-color: #fff;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

iframe {
  width: 100%;
  height: 90vh;
}

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