Sometimes when you embed a video on your web page with an iframe, it interferes with your navigation. The video appears to be on a higher level covering up your drop down menu and other elements. Here’s what you do to fix it.
Add a command at the end of the link in the video embed code
If the video link does not contain a question mark (?), add “?amp;wmode=opaque” to the end.
If the link already has a “?”, add “&wmode=opaque” to the end.