Have the parser play nice with nested CSS

[bramus]

This does not work in a browser that supports CSS Nesting but no Scroll-Driven Animations:

body {
  div {
    animation: move linear;
    animation-timeline: scroll();
  }
}

When removing the nesting, the polyfill works fine.

Demo: https://codepen.io/bramus/pen/XWoWejQ/64471303f33661702c983e3b4b73a83a

[eloyesp]

Is there any way to prevent this from crashing the parser, to make it ignore that file, for example?