body {
    background-color: #f4f9f4;
}

.navbar, .btn-primary {
    background-color: #006633 !important;
    border-color: #006633 !important;
}

.header-section {
    background: linear-gradient(rgba(0,102,51,0.8), rgba(0,102,51,0.8)),
    url('../img/header.jpg');
    background-size: cover;
    color: white;
    padding: 60px;
    text-align: center;
}