hover on child without hover effect on parent [dup

问题:

This question already has answers here:

How to style the parent element when hovering a child element? (8 answers)

Closed 6 years ago.

So I have 2 div's they're in each other so like this

<div class="parent">
    <div class="child"></div>
</div>

and I want to change the background from .parent when I hover over .parent.

but I want the background to turn normal again when I hover over .child.

so for example: http://jsfiddle.net/k3Zdt/1/

When I hover over the darkblue area I want the not-so-darkblue area to stay not-so-darkblue instead of changing to white.

I would like to keep this <div> structure. and I dont want a JavaScript solution (I know the JavaScript solution but I want to keep it pure CSS).

回答1:

Basically you can't : How to style the parent element when hovering a child element?

But a trick is to use a sibling element : http://jsfiddle.net/k3Zdt/8/

.parent {
  width: 100px;
  height: 100px;
  padding: 50px;
}

.child {
  height: 100px;
  width: 100px;
  background: #355E95;
  transition: background-color 1s;
  position: relative;
  top: -200px;
}

.child:hover {
  background: #000;
}

.sibling {
  position: relative;
  width: 100px;
  height: 100px;
  padding: 50px;
  top: -50px;
  left: -50px;
  background: #3D6AA2;
  transition: background-color 1s;    
}

.sibling:hover {
  background: #FFF;
}

<div class="parent">
    <div class="sibling"></div>
    <div class="child"></div>
</div>

回答2:

You can trick something ;)

Basically, use a :before pseudo-element for the child div, with its same size;

when you hover on the child div, enlarge the :before pseudo-element to cover the father div area; this will cause the father div hover effect to fall down, and then to come back to the original state. A precise combination of z-index is involved too.

Demo: http://jsfiddle.net/gFu8h/ ^{Dark Magic(tm)}

.parent {
    width: 100px;
    height: 100px;
    padding: 50px;
    transition: background-color 1s;
    background: #3D6AA2;    
    position: relative;
    z-index: 1;
}

.parent:hover{
    background: #FFF;    
}

.child {
    height: 100px;
    width: 100px;
    background: #355E95;
    transition: background-color 1s;
    position: relative;
}

.child:hover {    
    background: #000;
}

.child:before{
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;        
    z-index: -1;
    transition: background-color 1s;
}

.child:hover:before{
    top: -50px;
    bottom: -50px;
    left: -50px;
    right: -50px;     
    background: #3D6AA2;    
}

<div class="parent">
    <div class="child"></div>
</div>