Child:Hover div box affect Parent div box CSS

Question

The goal is to affect the Parent div box using :hover via child div box.

This is what I've Done and it doesn't work. HTML:

<body>
<div id=Parent-box>
<div id=Child-box></div>
</div>
</body>

CSS:

#Parent-box{
width: 750px;
height: 400px;
margin-left: auto;
margin-right: auto;
margin-top: 25px;
border: 1px solid #000;
position: relative;
}
 
#Child-box{
z-index: 1;
width: 700px;
height: 350px;
margin-left: 25px;
margin-top: 25px;
position: absolute;
background: #339;
border: 1px solid #000;
transition: all 200ms linear;
}
 
#Child-box:hover{
height: 600px;
transition: all 200ms linear;
}
 
#Child-box:hover + #Parent-box{
height: 650px;
transition: all 100ms linear;
}

does anyone know if this is possible?

thanks :)

Not with CSS, there are no parent selectors. You'll need to use JavaScript to do it. — Marc Baumbach, Aug 24 '14 at 06:51
this link will help you to understand ..http://stackoverflow.com/questions/1014861/is-there-a-css-parent-selector?rq=1 — Kheema Pandey, Aug 24 '14 at 06:56
Ajey.. the parent's height should be increased also... when i hover the child — Anonymous, Aug 24 '14 at 06:58

score 5 · Accepted Answer · answered Aug 24 '14 at 07:12

5

PURE CSS - DEMO (Without JavaScript or jQuery)

But you must use position: relative; for your Child-box div.

HTML

<div id=Parent-box>
<div id=Child-box></div>
</div>

CSS

#Parent-box{
width: 750px;
height: auto;
margin-left: auto;
margin-right: auto;
margin-top: 25px;
border: 1px solid #000;
position: relative;
}

#Child-box{
z-index: 1;
width: 700px;
height: 350px;
margin-left: 25px;
margin-top: 25px;
margin-bottom: 25px;
position: relative;
background: #339;
border: 1px solid #000;
transition: all 200ms linear;
}

#Child-box:hover{
padding: 125px 0px;
transition: all 200ms linear;
}

answered Aug 24 '14 at 07:12

Anonymous

9,152
2
19
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From my point of view this is the best solution. Clear and clean! – Steven Web Aug 24 '14 at 07:17
@StevenWave Thanks! :) – Anonymous Aug 24 '14 at 07:18
absolutely, no js required in this case. nice solution.. deserve `+1`. – Kheema Pandey Aug 24 '14 at 07:19
@KheemaPandey Thanks! :) – Anonymous Aug 24 '14 at 07:20
@Anonymous I’m glad I was able to help :) – Anonymous Aug 24 '14 at 07:27
1

if this is the answer of your choice, then select this as the correct answer! @Anonymous – Steven Web Aug 24 '14 at 07:30

score 0 · Answer 2 · answered Aug 24 '14 at 07:08

0

you can acheive it by using jquery since, you cannot select a parent div using CSS Here is the Demo

$('#Child-box').hover(

function () {
    $('#Parent-box').css({
        'height': '800px'
    });
}, function () {
     $('#Parent-box').css({
        'height': '400px'
    })  ;
});

Not perfect, but you get the idea right ?

answered Aug 24 '14 at 07:08

Ajey

6,820
9
55
84

but Ajey.. how can i add some transition with jquery? I'm sorry because I'am not very familiar with transition using jquery.. If you mind.. can you teach?.. thanks – Anonymous Aug 24 '14 at 07:36

score 0 · Answer 3 · answered Aug 24 '14 at 07:08

Actually, there is no CSS selector for selecting a parent of a child. But, there are many ways to do the same in jquery. Here's the code:

$('#Child-box').mouseenter(function(){
   $(this).parent('#Parent-box').css('height','700px');
});


$('#Child-box').mouseleave(function(){
   $(this).parent('#Parent-box').css('height','600px');
});

score 0 · Answer 4 · answered Aug 24 '14 at 07:10

It's only possible to trigger the hover event on the parent element in your case!

You can do this:

#Parent-box {
    width: 750px;
    height: 400px;
    margin-left: auto;
    margin-right: auto;
    margin-top: 25px;
    border: 1px solid #000;
    position: relative;
}
#Child-box {
    z-index: 1;
    width: 700px;
    height: 350px;
    margin-left: 25px;
    margin-top: 25px;
    position: absolute;
    background: #339;
    border: 1px solid #000;
    -moz-transition: all 200ms linear;
    -o-transition: all 200ms linear;
    -webkit-transition: all 200ms linear;
    transition: all 200ms linear;
}
#Parent-box:hover  {
    height: 650px;
    -moz-transition: all 100ms linear;
    -o-transition: all 100ms linear;
    -webkit-transition: all 100ms linear;
    transition: all 100ms linear;
}

#Parent-box:hover #Child-box {
    height: 600px;
    -moz-transition: all 200ms linear;
    -o-transition: all 200ms linear;
    -webkit-transition: all 200ms linear;
    transition: all 200ms linear;
}

If you want to have a syncron hover effect then change the transitions time. I also added the vendor specific properties.

Here's DEMO

score 0 · Answer 5 · answered Aug 24 '14 at 07:32

well, the main problem is you have defined the height:400px on parent element and this is the real problem. In your scenario you can achieve it with pure CSS; also there are much advanced options when using jquery. Check DEMO.

CSS Code

#Parent_box{height: 400px; /*Remove height.*/}

JS Code

$(document).ready(function()
{
$("#Child_box").hover(function (){
  $(this).parent("#Parent_box").css("height", "750px;");
});
});

Child:Hover div box affect Parent div box CSS

5 Answers5