I'm not able to look right now but based on Philippe's reply it sounds like you 
had a ul inside an li. The li has :hover styles applied. Since the ul was not 
visible but still present (because there is no such thing as display:hidden;) 
the li was actually as tall as its content - which included the invisible ul. 

Sent from my iPhone

> On Nov 4, 2014, at 7:19 PM, John <j...@coffeeonmars.com> wrote:
> 
> 
>> On Nov 4, 2014, at 3:47 PM, Philippe Wittenbergh <e...@l-c-n.com> wrote:
>> 
>> You have this in your stylesheet for your submenus:
>> 
>> #main_nav ul li ul { ;
>> /* snip */
>> /* visibility:hidden; */
>> display:hidden; /* <-------- what is this ? */
>> opacity:0;
>> }
>> 
>> The submenu is invisible due to the opacity being set to `0` but fully 
>> present… This expands the hover area of the parent <li>. I guess you want to 
>> say 'display: none', but I’m not in your head and won’t venture that far…
> 
> Philippe; your suggestion fixed the issue, and I thank you…I do not see the 
> relationship between the nav ul li ul display and the “sensitive area” of ul 
> li:hover ul   < isn’t the hover applied to the top-level items in the ul? 
> 
> Maybe the issue is that I am accustomed to seeing the hover area limited to 
> the item having :hover applied to it (plus whatever padding) but this 
> situation was the entire child ul behaving as though IT had :hover applied to 
> it.
> 
> I hope I’m making some sense of my confusion here…channeling Yogi Berra..
> 
> John
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