body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

h1 {
    text-align: center;
}

#files-list {
    margin-top: 30px;
}

#files {
    list-style-type: none;
}

#files li {
    margin-bottom: 10px;
}

#files a {
    color: #0066cc;
    text-decoration: none;
}

#files a:hover {
    text-decoration: underline;
}

.error {
    color: red;
}