DiffEditor does not highlight diffs

[rahulthewall]

Problem

I am trying to use the DiffEditor, but it does not highlight the differences in the two texts.

Sample code to reproduce your issue

The code has been reproduced here: https://replit.com/@rahulthewall/WingedTanMultiprocessing?v=1

[wxupjack]

add :global before the .codeMarker {} to avoid CSS modules localize the class name. Source from this repo's disscussion

:global .codeMarker {
    background-color: #ffff99 ;
    position: absolute ;
    z-index: 20;
}