The thing is that there's so much going on with that page that it's hard to track down. If I do:
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<div style="position: absolute; top: 0; left: 0; width: 100px; height: 800px; background: red;"></div>
<iframe src="http://embed.newsinc.com/Single/iframe.html?WID=2&VID=25108654&freewheel=91082&sitesection=sesunsentinel&height=267&width=400" height=267 width=400 frameborder=no scrolling=no noresize marginwidth=0px marginheight=0px></iframe>
So there are a lot of items (elements) to look through to find the one(s) controlling the z-index for the drop down and for the iframe.
That fact, the length of time it takes the page to load (way more than 8 seconds, seems close to a minute), makes working with it and troubleshooting it very time consuming. Each time a change is made, you really need to reload the page to see if it has had a beneficial effect. Some things can be tested in the console/developer tools (F12 in Chrome), but to be certain, a reload is required.