#top {
    text-align: center;
}



.first {
    margin-top: 20px;
}


pre {
    font-size: 11px;
    margin-top: 5px;
    padding: 4px;
    background-color: #e3e2c6;
    border: 1px solid #999;
}


ol {
    margin: 0;
    padding: 0 0px 0 20px;
}



img {
    border: 0;
}