CSS Transform: Translate Moves Postion:Fixed Inner Div

position: fixed div is not fixed when parent rotates or translates

This is a repost, the answer is located in this original question

Positions fixed doesn't work when using -webkit-transform

Unfortunately it is a bug, but there seems to be a way to get around it.

Fixed position but relative to container

Short answer: ~~no.~~ (It is now possible with CSS transform. See the edit below)

Long answer: The problem with using "fixed" positioning is that it takes the element out of flow. thus it can't be re-positioned relative to its parent because it's as if it didn't have one. If, however, the container is of a fixed, known width, you can use something like:

#fixedContainer {
  position: fixed;
  width: 600px;
  height: 200px;
  left: 50%;
  top: 0%;
  margin-left: -300px; /*half the width*/
}

http://jsfiddle.net/HFjU6/1/

Edit (03/2015):

This is outdated information. It is now possible to center content of an dynamic size (horizontally and vertically) with the help of the magic of CSS3 transform. The same principle applies, but instead of using margin to offset your container, you can use translateX(-50%). This doesn't work with the above margin trick because you don't know how much to offset it unless the width is fixed and you can't use relative values (like 50%) because it will be relative to the parent and not the element it's applied to. transform behaves differently. Its values are relative to the element they are applied to. Thus, 50% for transform means half the width of the element, while 50% for margin is half of the parent's width. This is an IE9+ solution

Using similar code to the above example, I recreated the same scenario using completely dynamic width and height:

.fixedContainer {
    background-color:#ddd;
    position: fixed;
    padding: 2em;
    left: 50%;
    top: 0%;
    transform: translateX(-50%);
}

If you want it to be centered, you can do that too:

.fixedContainer {
    background-color:#ddd;
    position: fixed;
    padding: 2em;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

Demos:

jsFiddle: Centered horizontally only

jsFiddle: Centered both horizontally and vertically

Original credit goes to user aaronk6 for pointing it out to me in this answer

How to force position fixed when parent container has a transformation?

The Answer is simple this is not possible with CSS. Visit the following question for details

Positions fixed doesn't work when using -webkit-transform

'transform3d' not working with position: fixed children

But you can achieve your target with js here is a basic example.

$(window).scroll(function() {    $(".transform-fixed").css({        "top": $(window).scrollTop()    });})

.rotate {  transform: rotate(30deg);  background: blue;   width: 300px;  height: 300px;  margin: 0 auto;  }.fixed {  position: fixed;  background: red;  padding: 10px;  color: white;  top: 50px;}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script><html>
<body>  <div class="rotate">    <div class="fixed transform-fixed"> I am fixed inside a rotated div.</div>  </div>  <div class="fixed"> I am fixed outside a rotated div.</div></body>
</html>

Positions fixed doesn't work when using -webkit-transform

After some research, there has been a bug report on the Chromium website about this issue, so far Webkit browsers can't render these two effects together at the same time.

I would suggest adding some Webkit only CSS into your stylesheet and making the transformed div an image and using it as the background.

@media screen and (-webkit-min-device-pixel-ratio:0) {
  /* Webkit-specific CSS here (Chrome and Safari) */

  #transformed_div {
    /* styles here, background image etc */
  }
}

So for now you'll have to do it the old fashioned way, until Webkit browsers catch up to FF.

EDIT: As of 10/24/2012 the bug has not been resolved.

This appears to not be a bug, but an aspect of the specification due to the two effects requiring separate coordinate systems and stacking orders. As explained in this answer.

transform3d' not working with position: fixed children

This is because the transform creates a new local coordinate system, as per W3C spec:

In the HTML namespace, any value other than none for the transform results in the creation of both a stacking context and a containing block. The object acts as a containing block for fixed positioned descendants.

This means that fixed positioning becomes fixed to the transformed element, rather than the viewport.

There's not currently a work-around that I'm aware of.

It is also documented on Eric Meyer's article: Un-fixing Fixed Elements with CSS Transforms.

Transition for moving objects with position: fixed?

You're missing px on your top value, which should read top: 50px;

$('button').on('click', function() {  $('h1').toggleClass('top');})

.content-header {  position: fixed;  top: 50px;  width: inherit;  z-index: 1030;  padding: 12px 15px 12px 15px;  transition: top 1s linear;}
.content-header.top {  top: 0;}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script><h1 class="content-header">header</h1><button>click</button>

CSS Transform: Translate Moves Postion:Fixed Inner Div

position: fixed div is not fixed when parent rotates or translates

Fixed position but relative to container

Edit (03/2015):

Demos:

How to force position fixed when parent container has a transformation?

Positions fixed doesn't work when using -webkit-transform

transform3d' not working with position: fixed children

Transition for moving objects with position: fixed?

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