body {
    margin: 0;
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
    background: url('yu2.jpg');
    background-size: cover;
    color: white;
}
.card-container {
    text-align: center;
    margin-top: 20vh;
}

.open-card-button {
    background-color: #ff6f61;
    color: white;
    padding: 15px 30px;
    font-size: 1.5rem;
    border: none;
    border-radius: 10px;
    text-decoration: none;
    display: inline-block;
    transition: transform 0.3s ease;
}

.open-card-button:hover {
    transform: scale(1.1);
}

.card {
    opacity: 0;
    transform: scale(0.8);
    margin-top: 20px;
    text-align: center;
    transition: opacity 1s ease, transform 1s ease;
    display: inline-block;
}

.card-content {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
    text-align: center;
}

#toggle-card:checked ~ .card {
    opacity: 1;
    transform: scale(1);
}