* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #0f172a;
}

.download-btn {
    text-decoration: none;
    padding: 18px 40px;
    background: #2563eb;
    color: #fff;
    font-size: 20px;
    border-radius: 10px;
    transition: 0.2s;
}

.download-btn:hover {
    background: #1d4ed8;
}