oracle apex floating Region that is fixed in place while scrolling screen
<p>There are 2 regions on my Oracle apex page, the top one is like a header section, which I want to keep it "floating" on the top the screen while the rest of the page scroll. (like the invoice header info always available when the user scrolls through a long transaction log.)</p>

<p>I have done some google search on this and someone suggested identifying the parent class(e.g. "parent_class") to the Region Header, and add the following CSS to the header of the region</p>

<pre><code>.parent_class{
    margin-top:0;
    position:fixed;
    right:0;
}
</code></pre>

<p>I tried but seems like not working unless I got the parent class wrong.</p>

<p>Can someone please give me some advice on this?</p>