body {
    background-color: black;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: Arial, sans-serif;
}
a {
    display: inline-block;
    padding: 10px 20px;
    color: white;
    background-color: #1e90ff;
    text-decoration: none;
    border-radius: 5px;
    font-size: 16px;
}
a:hover {
    background-color: #1c86ee;
}