body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f0f2f5;
    text-align: center;
}



header {
    background: #007BFF;
    color: white;
    padding: 40px 20px;
}

main {
    margin: 50px 20px;
}


.down{
    background:white;
    margin:auto;
    min-width:80%;
    padding: 30px;
    margin: auto;
    border-radius: 10px;
    box-shadow: 0px 0px 10px rgba(0,0,0,0.1);
    max-width: 400px;
    color:blue;
}
.down > h1{
    color:green;
}
.download-box {
    background: white;
    padding: 30px;
    margin: auto;
    border-radius: 10px;
    box-shadow: 0px 0px 10px rgba(0,0,0,0.1);
    max-width: 400px;
}

.download-box a {
    display: inline-block;
    margin-top: 20px;
    text-decoration: none;
    background: #28a745;
    color: white;
    padding: 12px 20px;
    border-radius: 5px;
    font-weight: bold;
}

footer {
    background: #333;
    color: white;
    padding: 20px;
    margin-top: 50px;
}