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

.login-container,
.upload-container,
.download-container {
    width: 600px;
    margin: 100px auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.download-container {
    text-align: center;
}

#menu {
    text-align: right;
}

h2 {
    text-align: center;
}

form {
    display: flex;
    flex-direction: column;
}

label {
    margin-bottom: 5px;
}

input,
button {
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    background-color: #28a745;
    color: #fff;
    cursor: pointer;
}

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

.error {
    color: red;
    text-align: center;
}

ul {
    list-style-type: none;
    padding: 0;
}

ul li {
    margin-bottom: 10px;
}

a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    max-width: 600px;
    margin: auto;
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h2 {
    text-align: center;
}

label {
    font-weight: bold;
}

select,
button {
    width: 100%;
    padding: 10px;
    margin-top: 8px;
    margin-bottom: 16px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-size: 16px;
}

textarea {
    width: 96%;
    padding: 10px;
    margin-top: 8px;
    margin-bottom: 16px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-size: 16px;
}