CSS Filter invert rule breaking fixed position on

2019-02-21 13:10发布

问题:

This question already has an answer here:

CSS-Filter on parent breaks child positioning 1 answer

I'm on Chrome 68.

Whenever I have filter: invert(xxx); on the <body>, anything positioned as fixed doesn't stick to the screen, it scrolls with everything.

Demo with filter: invert(xxx);

body{
  height: 8000px;
  filter: invert(0.85);
}

div{
  position: fixed;
  top: 0;
  left: 0;
  height: 100px;
  width: 100px;
  border: 1px solid black;
}

<div></div>

Demo without filter: invert(xxx);

body{
  height: 8000px;
}

div{
  position: fixed;
  top: 0;
  left: 0;
  height: 100px;
  width: 100px;
  border: 1px solid black;
}

<div></div>

EDIT: Works fine on Chrome 67, but not on Chrome 68.

回答1:

It looks like a bug on Google Chrome 68, but you can solve this using the <html> element instead of the <body> element:

html {
  height: 8000px;
  filter: invert(0.85);
}
div {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  height: 100px;
  width: 100px;
  border: 1px solid black;
}

<div></div>

Note: In case only top and left is set to 0 the element doesn't stay fixed on scroll. But if you add bottom: 0; the element stay fixed again.

I also compared the styles before (Chrome 67) and after (Chrome 68) the update and the following values changed on the same example (with filter):

+---------------+-----------------+
| Chrome 67     | Chrome 68       |
+---------------+-----------------+
| bottom: 97px; | bottom: 7898px; |
| right: 526px; | right: 510px;   |
+---------------+-----------------+