body {
    font-family: Arial, sans-serif;
    max-width: 600px;
    margin: auto;
    padding: 20px;
    text-align: center;
}

input, button {
    display: block;
    margin: 10px auto;
    padding: 10px;
    width: 80%;
    font-size: 16px;
}

button {
    background-color: #007BFF;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

#cardList div {
    border: 1px solid #ccc;
    padding: 15px;
    margin: 10px 0;
    text-align: left;
    background: #f9f9f9;
    border-radius: 8px;
}

#cardList img {
    display: block;
    margin-top: 5px;
    max-width: 100%;
}
.delete-btn {
    background: red;
    color: white;
    border: none;
    padding: 5px 10px;
    cursor: pointer;
    margin-top: 5px;
}
.delete-btn:hover {
    background: darkred;
}
#scanner {
    display: block;
    width: 100% !important;
    max-width: 100%;
    height: auto;
    margin: 10px auto;
}