body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}
header {
    background-color: #4CAF50;
    color: white;
    padding: 20px;
    text-align: center;
}
nav .navbar-nav .nav-link {
    color: white;
}
section {
    padding: 40px 20px;
}
footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px;
}
.dropdown-menu {
    background-color: #4CAF50;
}
.dropdown-item {
    color: white;
}
.btn-primary {
    background-color: #4CAF50;
    border: none;
}