Pure CSS drop down menu with delay issue

Question

I found a great CSS solution for a menu with submenu, pure CSS:
link: Codepen by Phil Hoyt

Now I want a delay on hiding the menu on mouse movements. So that the menu doesn't hide directly when the mouse is off the menu item (for a short time). So I added some CSS, found on this page , resulting in code below. Previous link exactly explains my issue, but I haven't been able to fix it with the hints.

When you hover the main menu items, the delay of the first item keeps the menu item open, while the mouse is already on the second menu item. See gif below.

How will I be able to fix this? Keeping the delay, but when another menu is open, hiding the menu item instantly.

---

 #primary_nav_wrap { margin-top:15px } #primary_nav_wrap ul { list-style:none; position:relative; float:left; margin:0; padding:0 } #primary_nav_wrap ul a { display:block; color:#333; text-decoration:none; font-weight:700; font-size:12px; line-height:32px; padding:0 15px; font-family:"HelveticaNeue","Helvetica Neue",Helvetica,Arial,sans-serif } #primary_nav_wrap ul li { position:relative; float:left; margin:0; padding:0 } #primary_nav_wrap ul li.current-menu-item { background:#ddd } #primary_nav_wrap ul li:hover { background:#f6f6f6 } #primary_nav_wrap ul ul { visibility: hidden; transition: 0.2s 1s; position:absolute; top:100%; left:0; background:#fff; padding:0 } #primary_nav_wrap ul ul li { float:none; width:200px } #primary_nav_wrap ul ul a { line-height:120%; padding:10px 15px } #primary_nav_wrap ul ul ul { top:0; left:100% } #primary_nav_wrap ul li:hover > ul { visibility: visible; transition-delay: 0s; } 

 <h1>Simple Pure CSS Drop Down Menu</h1> <nav id="primary_nav_wrap"> <ul> <li class="current-menu-item"><a href="#">Home</a></li> <li><a href="#">Menu 1</a> <ul> <li><a href="#">Sub Menu 1</a></li> <li><a href="#">Sub Menu 2</a></li> <li><a href="#">Sub Menu 3</a></li> <li><a href="#">Sub Menu 4</a> <ul> <li><a href="#">Deep Menu 1</a> <ul> <li><a href="#">Sub Deep 1</a></li> <li><a href="#">Sub Deep 2</a></li> <li><a href="#">Sub Deep 3</a></li> <li><a href="#">Sub Deep 4</a></li> </ul> </li> <li><a href="#">Deep Menu 2</a></li> </ul> </li> <li><a href="#">Sub Menu 5</a></li> </ul> </li> <li><a href="#">Menu 2</a> <ul> <li><a href="#">Sub Menu 1</a></li> <li><a href="#">Sub Menu 2</a></li> <li><a href="#">Sub Menu 3</a></li> </ul> </li> <li><a href="#">Menu 3</a> <ul> <li class="dir"><a href="#">Sub Menu 1</a></li> <li class="dir"><a href="#">Sub Menu 2 THIS IS SO LONG IT MIGHT CAUSE AN ISSEUE BUT MAYBE NOT?</a> <ul> <li><a href="#">Category 1</a></li> <li><a href="#">Category 2</a></li> <li><a href="#">Category 3</a></li> <li><a href="#">Category 4</a></li> <li><a href="#">Category 5</a></li> </ul> </li> <li><a href="#">Sub Menu 3</a></li> <li><a href="#">Sub Menu 4</a></li> <li><a href="#">Sub Menu 5</a></li> </ul> </li> <li><a href="#">Menu 4</a></li> <li><a href="#">Menu 5</a></li> <li><a href="#">Menu 6</a></li> <li><a href="#">Contact Us</a></li> </ul> </nav> 

Answer 1

Pretty simple, add the transition delay only when you don't hover the menu container (you move the mouse out)

By the way thanks for inspiration how to solve accidentally hovering out of nested narrow menu items.

#primary_nav_wrap ul:hover ul
{
    transition: 0s;
}
#primary_nav_wrap ul:not(:hover) ul
{
    transition: 0.1s 1s;
}

(This should do the same)

#primary_nav_wrap ul ul
{
    transition: 0.1s 1s;
}
#primary_nav_wrap ul:hover ul
{
    transition: 0s;
}

 #primary_nav_wrap { margin-top:15px } #primary_nav_wrap ul { list-style:none; position:relative; float:left; margin:0; padding:0 } #primary_nav_wrap ul a { display:block; color:#333; text-decoration:none; font-weight:700; font-size:12px; line-height:32px; padding:0 15px; font-family:"HelveticaNeue","Helvetica Neue",Helvetica,Arial,sans-serif } #primary_nav_wrap ul li { position:relative; float:left; margin:0; padding:0 } #primary_nav_wrap ul li.current-menu-item { background:#ddd } #primary_nav_wrap ul li:hover { background:#f6f6f6 } #primary_nav_wrap ul ul { visibility: hidden; position:absolute; top:100%; left:0; background:#fff; padding:0 } #primary_nav_wrap:not(:hover) ul { transition: all 0.1s; transition-delay:1s; } #primary_nav_wrap:hover > ul:not(:hover) { transition: all 0s!important; transition-delay:0s!important; display:none!important; } #primary_nav_wrap ul ul li { float:none; width:200px } #primary_nav_wrap ul ul a { line-height:120%; padding:10px 15px } #primary_nav_wrap ul ul ul { top:0; left:100% } #primary_nav_wrap ul li:hover > ul { visibility: visible; transition-delay: 0s; } 

 <h1>Simple Pure CSS Drop Down Menu</h1> <nav id="primary_nav_wrap"> <ul> <li class="current-menu-item"><a href="#">Home</a></li> <li><a href="#">Menu 1</a> <ul> <li><a href="#">Sub Menu 1</a></li> <li><a href="#">Sub Menu 2</a></li> <li><a href="#">Sub Menu 3</a></li> <li><a href="#">Sub Menu 4</a> <ul> <li><a href="#">Deep Menu 1</a> <ul> <li><a href="#">Sub Deep 1</a></li> <li><a href="#">Sub Deep 2</a></li> <li><a href="#">Sub Deep 3</a></li> <li><a href="#">Sub Deep 4</a></li> </ul> </li> <li><a href="#">Deep Menu 2</a></li> </ul> </li> <li><a href="#">Sub Menu 5</a></li> </ul> </li> <li><a href="#">Menu 2</a> <ul> <li><a href="#">Sub Menu 1</a></li> <li><a href="#">Sub Menu 2</a></li> <li><a href="#">Sub Menu 3</a></li> </ul> </li> <li><a href="#">Menu 3</a> <ul> <li class="dir"><a href="#">Sub Menu 1</a></li> <li class="dir"><a href="#">Sub Menu 2 THIS IS SO LONG IT MIGHT CAUSE AN ISSEUE BUT MAYBE NOT?</a> <ul> <li><a href="#">Category 1</a></li> <li><a href="#">Category 2</a></li> <li><a href="#">Category 3</a></li> <li><a href="#">Category 4</a></li> <li><a href="#">Category 5</a></li> </ul> </li> <li><a href="#">Sub Menu 3</a></li> <li><a href="#">Sub Menu 4</a></li> <li><a href="#">Sub Menu 5</a></li> </ul> </li> <li><a href="#">Menu 4</a></li> <li><a href="#">Menu 5</a></li> <li><a href="#">Menu 6</a></li> <li><a href="#">Contact Us</a></li> </ul> </nav>