body {
    background-color: #f4f4f4;
    font-family: Arial, sans-serif;
}

h1 {
    text-align: center;
    margin: 30px 0;
    color: #333;
}

.card {
    margin-bottom: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.card-title {
    font-weight: bold;
}

iframe {
    width: 100%;
    height: 220px;
    border: none;
}