body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

header {
    margin-bottom: 20px;
}

h1 {
    font-size: 2.5em;
    color: #333;
}

main {
    text-align: center;
}

button {
    padding: 15px 30px;
    font-size: 18px;
    color: #fff;
    background-color: #007BFF;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #0056b3;
}

a {
    text-decoration: none;
}