body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: #333;
    color: white;
    padding: 10px 0;
    text-align: center;
}

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

nav ul li {
    display: inline;
    margin-right: 10px;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

main {
    padding: 20px;
    text-align: center;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px 0;
    position: absolute;
    bottom: 0;
    width: 100%;
}

.download-buttons {
    margin-top: 20px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    margin: 5px;
    background-color: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #0056b3;
}