Positions fixed doesn't work when using -webki

Question

I am using -webkit-transform (and -moz-transform / -o-transform) to rotate a div. Also have position fixed added so the div scrols down with the user.

In Firefox it works fine, but in webkit based browsers it's broken. After using the -webkit-transform, the position fixed doesn't work anymore! How is that possible?

Answer 1

Something (a bit hacky) that worked for me is to position:sticky instead:

.fixed {
     position: sticky;
}

Answer 2

I had this issue whilst trying to implement react-color with react-swipeable-views (rsw). The problem for me was that rsw applies translate(-100%, 0) to a tab panel which breaks the default fixed position div added over the full screen which when clicked closes the color picker model.

For me the solution was to apply the opposite transform to the fixed element (in this case translate(100%, 0) which fixed my issue. I'm not sure if this is useful in other cases but thought I would share anyway.

Here is an example showing what I've described above:

https://codepen.io/relativemc/pen/VwweEez

Answer 3

For anyone who finds their background images are disappearing in Chrome because of the same issue with background-attachment: fixed; - this was my solution:

// run js if Chrome is being used
if(navigator.userAgent.toLowerCase().indexOf('chrome') > -1) {
    // set background-attachment back to the default of 'scroll'
    $('.imagebg').css('background-attachment', 'scroll');

    // move the background-position according to the div's y position
    $(window).scroll(function(){

        scrollTop = $(window).scrollTop();
        photoTop = $('.imagebg').offset().top;
        distance = (photoTop - scrollTop);
        $('.imagebg').css('background-position', 'center ' + (distance*-1) + 'px');

    });
}  

Answer 4

the fixed position of an element is broken if you apply transform to any ancestor.

<div style='position:fixed;-.*-transform:scale(2)'>...</div> //ok

<div style='-.*-transform:scale(2)'>
      <div style='position:fixed'>...</div> // broken
</div>

Answer 5

If you can use javascript as an option this can be a workaround for positioning a position fixed element relavtive to the window when it's inside a transformed element:

  let fixedEl // some node that you is position 
              // fixed inside of an element that has a transform

  const rect = fixedEl.getBoundingClientRect()
  const distanceFromWindowTop = rect.top
  const distanceFromWindwoLeft = rect.left
  let top = fixedEl.offsetTop
  let left = fixedEl.offsetLeft

  if(distanceFromWindowTop !== relativeTop) {
    top = -distanceFromWindowTop
    fixedEl.style.top = `${top}px`
  }

  if(distanceFromWindowLeft !== relativeLeft) {
    left = -distanceFromWindowLeft
    fixedEl.style.left = `${left}px`
  }

Granted you will also have to adjust your heights and width because fixedEl will be calculating it's with based on it's container. That depends on your use case but this will allow you to predictably set the something position fixed, regardless of it's container.

Answer 6

Probably due to a bug in Chrome as I can't replicate in Safari nor Firefox, but this works in Chrome 40.0.2214.111 http://jsbin.com/hacame/1/edit?html,css,output

It's a very particular structure so it's by no means a universally applicable one-lined css fix, but perhaps someone can tinker with it to get it working in Safari and Firefox.