While working on a project, I incorporated the FlexStart Bootstrap Template. However, I encountered an issue with the Dropdown feature on the navbar. When hovering over the menu and submenu, they flicker incessantly. Despite investing a considerable amount of time into troubleshooting, I have been unable to resolve this problem. Can you elucidate why this functionality is malfunctioning?
The issue stems from the animation that activates upon exiting the navigation menu. As the menu transitions downward and fades out, encountering the mouse inadvertently triggers a conflicting animation of fading in and moving up.
In the specific scenario you provided, the flickering problem arises only when there is interaction between the cursor and the menu during the animation sequence.
If we assume that your code remains unchanged, the animation is initiated by utilizing the :hover pseudo selector for the .navbar .dropdown ul class.
To rectify this, it is recommended to eliminate both instances of the top property in the following selectors: .navbar .dropdown:hover > ul and .navbar .dropdown ul.
.navbar .dropdown:hover > ul {
opacity: 1;
top: 100%; /* Delete This */
visibility: visible;
}
.navbar .dropdown ul {
display: block;
position: absolute;
left: 14px;
top: 100%; /* Delete This */
margin: 0;
padding: 10px 0;
z-index: 99;
opacity: 0;
visibility: hidden;
background: #fff;
box-shadow: 0px 0px 30px rgba(127, 137, 161, 0.25);
transition: 0.3s;
border-radius: 4px;
}
Essentially, the reason behind this issue is that when you move your cursor away from the menu link itself, you end up hovering over the 10px bottom padding of the .navbar .dropdown ul.
Here is an illustration demonstrating the impact of the padding: 10px 0 on .navbar .dropdown ul, causing the menu to disappear:
https://i.sstatic.net/oEX3b.png
Hovering over the green area (10px top and 10px bottom of the ul) indicates that you are no longer directly interacting with the link.
To resolve this issue, simply remove the padding, and the menu flickering will cease.
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