body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    text-align: center;
    background-color: #f4f4f4;
}

h1 {
    margin: 20px 0;
    color: #333;
}

.gallery {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.folder {
    text-decoration: none;
    color: #333;
    font-size: 20px;
    margin: 10px 0;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    width: 200px;
    text-align: center;
    background-color: #fff;
    transition: background-color 0.3s, color 0.3s;
}

.folder:hover {
    background-color: #333;
    color: #fff;
}

.password-form {
    margin-top: 100px;
}

.password-form input[type="password"],
.password-form input[type="submit"] {
    margin: 10px;
    padding: 10px;
    font-size: 16px;
}