Please add the ability to search through the Custom CSS sheet and possibly to find and replace within it as well.

I currently have over 2500 lines of custom CSS in my project (including dark mode and mobile layouts) and there does not seem to be a way to search through the CSS page without exporting everything to a different program/document and then copying it back in, which makes it very cumbersome to make even slight changes, let alone large ones that affect multiple areas.

Even browser search seems limited to what is currently displayed on the page at the time.