Stick the JS snippet in here, Steve.

The CSS:

#native-inline {
    margin: 10px auto 10px auto;
    padding: 5px; /* optional */
    height: 200px;
    width: 98%;
    max-width: 1024px; /* adjust as needed, or may be omitted if you don't want a max width */
    background: #FFFF66; /* just for illustration */
    text-align: center;
}

The HTML:

    ‹div id="native-inline">
    ‹p>Stick the JS snippet in here, Steve.‹/p>
    ‹/div>