body {
font-family: Arial, sans-serif;
margin: 0;
background: #f4f7f3;
color: #2f3e2f;
}


header {
background: #4caf50;
color: white;
text-align: center;
padding: 40px 20px;
}


nav {
background: #388e3c;
text-align: center;
padding: 10px;
}


nav a {
color: white;
margin: 0 15px;
text-decoration: none;
font-weight: bold;
}


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


main {
max-width: 900px;
margin: 40px auto;
padding: 0 20px;
}


section {
background: white;
margin-bottom: 30px;
padding: 25px;
border-radius: 6px;
}


footer {
background: #2e7d32;
color: white;
text-align: center;
padding: 15px;
font-size: 14px;
}