body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0px 0px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
}

h1 {
    margin-bottom: 20px;
    color: #333;
}

input[type="file"] {
    margin-bottom: 15px;
}

button {
    background-color: #1da1f2;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #0a85d9;
}

#card {
    margin-top: 20px;
    display: inline-block;
    padding: 10px 20px;
    background-color: #28a745;
    color: white;
    border-radius: 5px;
    text-decoration: none;
}

#card:hover {
    background-color: #218838;
}

#preview {
    margin-top: 20px;
}