body {
        margin: 0;
        font-family: Arial, sans-serif;
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 100vh;
        background-color: #000000;
    }

    .card {
        background-color: #1c1c1c;
        color: #fff;
        width: 100%;
        max-width: 400px;
        border-radius: 12px;
        padding: 20px;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
        text-align: center;
    }

    .card img {
        width: 100px;
        height: 100px;
        border-radius: 50%;
        object-fit: cover;
        margin-bottom: 15px;
    }

    .card h1 {
        font-size: 1.5rem;
        margin: 10px 0;
    }

    .card p {
        color: #87d37c;
        margin: 5px 0;
    }

    .card .bio {
        font-size: 0.9rem;
        color: #bbb;
        margin-bottom: 20px;
    }

    .card .btn {
        display: block;
        width: 100%;
        margin: 10px -5px;
        padding: 7px;
        background-color: #333;
        color: #fff;
        text-decoration: none;
        border: none;
        border-radius: 8px;
        font-size: 0.9rem;
        cursor: pointer;
        transition: background-color 0.3s;
    }

    .card .btn:hover {
        background-color: #444;
    }

    @media (max-width: 600px) {
        .card {
        padding: 15px;
        }

        .card img {
        width: 80px;
        height: 80px;
        }

        .card h1 {
        font-size: 1.2rem;
        }

        .card .btn {
        font-size: 0.8rem;
        }
    }