body {
    font-family: 'Arial', sans-serif;
    background-color: #f8f9fa;
}

.navbar {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.nav-link.active {
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 5px;
}

.footer {
    position: fixed;
    bottom: 0;
    width: 100%;
}

h1, h2, h3, h4, h5, h6 {
    color: #333;
}

.container {
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}