body {
    font-family: 'Arial', sans-serif;
    background-color: #f8f9fa;
    color: #333;
}

.navbar-brand {
    font-weight: bold;
    color: #007bff !important;
}

.chart-container {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 15px;
    margin-bottom: 20px;
}

.chart-container h3 {
    margin-bottom: 15px;
    color: #007bff;
    text-align: center;
}

iframe {
    border: none;
    border-radius: 4px;
}

footer {
    margin-top: 50px;
}

footer a {
    color: #007bff;
    text-decoration: none;
}

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

@media (max-width: 768px) {
    .chart-container {
        padding: 10px;
    }
}