* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body, html {
    height: 100%;
    font-family: Georgia, 'Times New Roman', Times, serif;
}

.header {
    background-color: #f8f9fa;
    padding: 10px 20px;
    border-bottom: 1px solid #dee2e6;
}

.header h1 {
    color: #333;
    font-size: 1.2rem;
}

.iframe-container {
    height: calc(100vh - 200px);
    width: 100%;
}

iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.error {
    padding: 20px;
    background-color: #f8d7da;
    color: #721c24;
    text-align: center;
}

.headers-info {
    background-color: #e9ecef;
    padding: 15px 20px;
    border-bottom: 1px solid #dee2e6;
    font-family: monospace;
}

.headers-info p {
    margin: 5px 0;
    font-size: 0.9rem;
}