body {
    font-family: Georgia, 'Times New Roman', Times, serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
}

nav {
    background: #444;
    padding: 0.5rem;
    text-align: center;
}

nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 1rem;
    font-size: 1.1rem;
}

nav a:hover {
    text-decoration: underline;
}

nav ul {
    list-style-type: none;
    padding: 0;
  }
  
  nav ul li {
    display: inline;
    margin: 0 15px;
  }
  
  nav ul li a {
    color: #ffffff;
    text-decoration: none;
    font-size: 18px;
  }

section {
    padding: 2rem;
    margin: 1rem 2rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
}

footer p {
    margin: 0;
}

table, th, td{
    border: 1px solid black;
    border-collapse: collapse;
}

.content-center{
    text-align: center;
}

iframe {
    border: 2px solid blue;
    border-radius: 20px;
}