body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin-top: 50px;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    margin: 10px;
    cursor: pointer;
}

button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

#wallet {
    padding: 10px;
    font-size: 16px;
    width: 300px;
}

#nft-collection {
    margin-top: 20px;
}

#nft-collection div {
    padding: 10px;
    border: 1px solid #ccc;
    margin: 5px;
    display: inline-block;
    min-width: 150px;
}