body {
    font-family: Arial, sans-serif;
    background: #0d1117;
    color: #e6edf3;
    margin: 0;
    padding: 0;
}

header {
    display: flex;
    justify-content: flex-end;
    padding: 20px;
}

select {
    background: #161b22;
    color: #e6edf3;
    border: 1px solid #30363d;
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
}

main {
    text-align: center;
    padding: 60px 20px;
}

h1 {
    font-size: 2.8rem;
}

p {
    font-size: 1.2rem;
    opacity: 0.85;
}

a {
    color: #58a6ff;
    text-decoration: none;
    font-weight: bold;
}