[css] How can I delay a :hover effect in CSS?

You can use transitions to delay the :hover effect you want, if the effect is CSS-based.

For example

div{
    transition: 0s background-color;
}

div:hover{
    background-color:red;    
    transition-delay:1s;
}

this will delay applying the the hover effects (background-color in this case) for one second.


Demo of delay on both hover on and off:

_x000D_
_x000D_
div{_x000D_
    display:inline-block;_x000D_
    padding:5px;_x000D_
    margin:10px;_x000D_
    border:1px solid #ccc;_x000D_
    transition: 0s background-color;_x000D_
    transition-delay:1s;_x000D_
}_x000D_
div:hover{_x000D_
    background-color:red;_x000D_
}
_x000D_
<div>delayed hover</div>
_x000D_
_x000D_
_x000D_

Demo of delay only on hover on:

_x000D_
_x000D_
div{_x000D_
    display:inline-block;_x000D_
    padding:5px;_x000D_
    margin:10px;_x000D_
    border:1px solid #ccc;_x000D_
    transition: 0s background-color;_x000D_
}_x000D_
div:hover{_x000D_
    background-color:red;    _x000D_
    transition-delay:1s;_x000D_
}
_x000D_
<div>delayed hover</div>
_x000D_
_x000D_
_x000D_


Vendor Specific Extentions for Transitions and W3C CSS3 transitions